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th{border:1px solid #a2a9b1;width:40%}.mw-parser-output .ib-chembox td+td{width:60%}</style> <table class="infobox ib-chembox"> <caption>Umbellulone </caption> <tbody><tr> <td colspan="2" class="borderless" style="text-align:center"> <table border="0" style="width:100%;display:inline-table;"> <tbody><tr> <td style="border-right:1px solid #aaa; width:50%;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Umbellulone.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Umbellulone.svg/150px-Umbellulone.svg.png" decoding="async" width="150" height="117" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Umbellulone.svg/225px-Umbellulone.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Umbellulone.svg/300px-Umbellulone.svg.png 2x" data-file-width="512" data-file-height="399" /></a><figcaption></figcaption></figure> </td> <td style="width:50%;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Spacefilling_model_of_umbellulone.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Spacefilling_model_of_umbellulone.png/150px-Spacefilling_model_of_umbellulone.png" decoding="async" width="150" height="174" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Spacefilling_model_of_umbellulone.png/225px-Spacefilling_model_of_umbellulone.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Spacefilling_model_of_umbellulone.png/300px-Spacefilling_model_of_umbellulone.png 2x" data-file-width="309" data-file-height="359" /></a><figcaption></figcaption></figure> </td></tr></tbody></table> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Names </th></tr> <tr> <td colspan="2" style="text-align:left;"><a href="/wiki/Chemical_nomenclature" title="Chemical nomenclature">IUPAC name</a> <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">4-Methyl-1-(propan-2-yl)bicyclo[3.1.0]hex-3-en-2-one</div> </td></tr> <tr> <td colspan="2" style="text-align:left;">Other names <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Thujenone; Thujen-2-one; Umbellulon</div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Identifiers </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></div> </td> <td><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=24545-81-1">24545-81-1</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=546-78-1">546-78-1</a></span> (1<i>R</i>,5<i>S</i>)<sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">3D model (<a href="/wiki/JSmol" class="mw-redirect" title="JSmol">JSmol</a>)</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="chemapps.stolaf.edu (3D interactive model)"><a rel="nofollow" class="external text" href="https://chemapps.stolaf.edu/jmol/jmol.php?model=O%3DC1%5CC%3DC%28%5CC%29C2C1%28C%28C%29C%29C2">Interactive image</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.chemspider.com"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.82348.html">82348</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/PubChem" title="PubChem">PubChem</a> <abbr title="Compound ID">CID</abbr></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="pubchem.ncbi.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/91195">91195</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/Unique_Ingredient_Identifier" title="Unique Ingredient Identifier">UNII</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="precision.fda.gov"><a rel="nofollow" class="external text" href="https://precision.fda.gov/uniisearch/srs/unii/X5YT6KCX2U">X5YT6KCX2U</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CompTox_Chemicals_Dashboard" title="CompTox Chemicals Dashboard">CompTox Dashboard</a> <span style="font-weight:normal">(<abbr title="U.S. Environmental Protection Agency">EPA</abbr>)</span></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="comptox.epa.gov"><a rel="nofollow" class="external text" href="https://comptox.epa.gov/dashboard/chemical/details/DTXSID40871998">DTXSID40871998</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7881242#P3117" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></li></ul></div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/International_Chemical_Identifier" title="International Chemical Identifier">InChI</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1S/C10H14O/c1-6(2)10-5-8(10)7(3)4-9(10)11/h4,6,8H,5H2,1-3H3</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: LTTVJAQLCIHAFV-UHFFFAOYSA-N</div></div></li><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1/C10H14O/c1-6(2)10-5-8(10)7(3)4-9(10)11/h4,6,8H,5H2,1-3H3</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: LTTVJAQLCIHAFV-UHFFFAOYAU</div></div></li></ul> </div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/Simplified_molecular-input_line-entry_system" class="mw-redirect" title="Simplified molecular-input line-entry system">SMILES</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:97%; line-height:120%;">O=C1\C=C(\C)C2C1(C(C)C)C2</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Properties </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></div> </td> <td><span title="Carbon">C</span><sub>10</sub><span title="Hydrogen">H</span><sub>14</sub><span title="Oxygen">O</span> </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td><span class="nowrap"><span data-sort-value="7002150221000000000♠"></span>150.221</span> g·mol<sup>−1</sup>   </td></tr> <tr> <td colspan="2" style="text-align:left; background:#f8eaba; border:1px solid #a2a9b1;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Except where otherwise noted, data are given for materials in their <a href="/wiki/Standard_state" title="Standard state">standard state</a> (at 25 °C [77 °F], 100 kPa).</div> <div style="margin-top: 0.3em;"></div> <div style="margin-top: 0.3em; text-align: center;"><a href="/wiki/Wikipedia:Chemical_infobox#References" title="Wikipedia:Chemical infobox">Infobox references</a></div> </td></tr> </tbody></table><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p><b>Umbellulone</b> is a <a href="/wiki/Headache" title="Headache">headache</a>-inducing <a href="/wiki/Monoterpene" title="Monoterpene">monoterpene</a> <a href="/wiki/Ketone" title="Ketone">ketone</a> found in the leaves of the tree <i><a href="/wiki/Umbellularia_californica" class="mw-redirect" title="Umbellularia californica">Umbellularia californica</a></i>, sometimes known as the "headache tree".<sup id="cite_ref-Brain2011_1-0" class="reference"><a href="#cite_note-Brain2011-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>It is hypothesized to cause headaches by influencing the <a href="/wiki/Trigeminovascular_system" title="Trigeminovascular system">trigeminovascular system</a> via <a href="/wiki/TRPA1" title="TRPA1">TRPA1</a>.<sup id="cite_ref-Brain2011_1-1" class="reference"><a href="#cite_note-Brain2011-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><i><a href="/wiki/Umbellularia_californica" class="mw-redirect" title="Umbellularia californica">Umbellularia californica</a></i> is a tree native to California and Southern Oregon.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Botanist <a href="/wiki/Archibald_Menzies" title="Archibald Menzies">Archibald Menzies</a> was the first to collect the oil at the end of the 18th century. In 1826 this tree was classified as a laurel, <i>Laurus regia</i>, by botanist <a href="/wiki/David_Douglas_(botanist)" title="David Douglas (botanist)">David Douglas</a>. </p><p>In 1833 the tree received another classification by Hooker and Arnott, <i>Tetranthera californica</i>. Shortly after that the present name was given by Nuttal, <i>Umbellularia californica</i>. In 1875 Heaney obtained a colorless liquid (oreodaphenol) via <a href="/wiki/Fractionation" title="Fractionation">fractionation</a> under reduced pressure. This oil of the California laurel possess a pungent odor. </p><p>Stillman (1880) did a fractionation at 215-216 °C. He discovered that inhalation of its fumes can lead to a painful cold sensation and severe headaches. In earlier times the leaves of the tree were used for cures for headaches or stomachaches and even toothaches. </p><p>Powers and Lee did in 1904 another fractionation on the oil of the tree at 217-222 °C. This yielded different compounds: <a href="/wiki/Pinene" title="Pinene">pinene</a>, <a href="/wiki/Eucalyptol" title="Eucalyptol">cineol</a>, <a href="/wiki/Eugenol" title="Eugenol">eugenol</a>, <a href="/wiki/Methyl_eugenol" title="Methyl eugenol">methyl eugenol</a> and a ketone called umbellulone. Umbellulone is the chemical responsible for the headaches induced by the tree. They gave umbellulone the following structural formula: </p> <dl><dd><figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Structuurformule_umbellulone.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Structuurformule_umbellulone.png/220px-Structuurformule_umbellulone.png" decoding="async" width="220" height="95" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Structuurformule_umbellulone.png/330px-Structuurformule_umbellulone.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Structuurformule_umbellulone.png/440px-Structuurformule_umbellulone.png 2x" data-file-width="786" data-file-height="339" /></a><figcaption>Strucutural formula according to Powers and Lee, 1904.</figcaption></figure><div style="clear:left;" class=""></div></dd></dl> <p>In 1908 the structural formula was adapted by Tutin, which was corrected later that year by Semmller to give the structural formula which is accepted today: </p> <dl><dd><figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Structuurfomules_umbellulone.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Structuurfomules_umbellulone.png/220px-Structuurfomules_umbellulone.png" decoding="async" width="220" height="122" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Structuurfomules_umbellulone.png/330px-Structuurfomules_umbellulone.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Structuurfomules_umbellulone.png/440px-Structuurfomules_umbellulone.png 2x" data-file-width="753" data-file-height="416" /></a><figcaption>(A) Strucutural formula according to Tutin, 1908. (B) Structural formula according to Semmller, 1908.</figcaption></figure><div style="clear:left;" class=""></div></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Structure_and_reactivity">Structure and reactivity</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=2" title="Edit section: Structure and reactivity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Umbellulone is a monoterpene ketone that is found in the leaves of <i>Umbellularia californica</i>. The formula of umbellulone is C<sub>10</sub>H<sub>14</sub>O, containing a <a href="/wiki/Cyclopropane" title="Cyclopropane">cyclopropane</a> and <a href="/wiki/Cyclopentane" title="Cyclopentane">cyclopentane</a> ring. There is only one isomer of umbellulone known. Umbellulone is a lipophilic liquid (oil) at room temperature. The boiling point of umbellulone is 220 °C and the vapor pressure is 0.159 mm/Hg. Umbellulone has a high-affinity binding for thiols. The molecule is reactive with most of the thiols, such as <a href="/wiki/Cysteamine" title="Cysteamine">cysteamine</a>, but not with all.<sup id="cite_ref-Brain2011_1-2" class="reference"><a href="#cite_note-Brain2011-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <dl><dd><figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Reactie_mechanisme.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Reactie_mechanisme.png/481px-Reactie_mechanisme.png" decoding="async" width="481" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/d/d9/Reactie_mechanisme.png 1.5x" data-file-width="688" data-file-height="239" /></a><figcaption>Reaction between cysteamine and umbellulone.</figcaption></figure><div style="clear:left;" class=""></div></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Synthesis">Synthesis</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=3" title="Edit section: Synthesis"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A possible synthesis of umbellulone is given by the following process.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Diazomethyl isopropyl ketone reacts with <a href="/wiki/Methyl_methacrylate" title="Methyl methacrylate">methyl methacrylate</a> to give 1-carbo-methoxy-2-isobutyryl-1-methylcyclopropane. This reaction gives a yield of 35%. This is then hydrolyzed to a mixture of <i>cis</i>- and <i>trans</i>-2-isobutyryl-1-methyl-1-cyclopropane. The trans isomer is isolated and reacts with the cadmium methyl Grignard reagent to 1-acetyl-2-isobutyryl-1-methylcyclopropane. This undergoes an <a href="/wiki/Aldol_condensation" title="Aldol condensation">aldol cyclization</a> on treatment with dilute base to umbellulone. </p> <div class="mw-heading mw-heading2"><h2 id="Mechanism_of_action">Mechanism of action</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=4" title="Edit section: Mechanism of action"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="TRPA1">TRPA1</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=5" title="Edit section: TRPA1"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:MEchanismebio.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/MEchanismebio.png/220px-MEchanismebio.png" decoding="async" width="220" height="236" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/c/c2/MEchanismebio.png 1.5x" data-file-width="312" data-file-height="335" /></a><figcaption>TRPA1 channel agonists can activate the TRPA1 channel to release CGRP. CGRP will bind to its receptor and will initiate <a href="/wiki/Vasodilation" title="Vasodilation">vasodilation</a>. Umbellulone is known to be able to interact with two ion channels, <a href="/wiki/Transient_receptor_potential_cation_channel,_member_A1" class="mw-redirect" title="Transient receptor potential cation channel, member A1">TRPA1</a> and <a href="/wiki/TRPM8" title="TRPM8">TRPM8</a>. Umbellulone has a high affinity to TRPA1 and a lower affinity to TRPM8.</figcaption></figure> <p>Umbellulone can cause severe headaches by activating <a href="/wiki/TRPA1" title="TRPA1">transient receptor potential cation channel, subfamily A, member 1</a> (TRPA1) and influencing the <a href="/wiki/Trigeminovascular_system" title="Trigeminovascular system">trigeminovascular</a> system via <a href="/wiki/Calcitonin_gene-related_peptide" title="Calcitonin gene-related peptide">calcitonin gene-related peptide</a> (CGRP). Once inhaled, umbellulone will diffuse from the nasal mucosa into the blood circulation. Because of the high lipid solubility of umbellulone, the molecule will quickly pass through the epithelial cells and will quickly be absorbed in the blood. From there on, umbellulone is able to reach the perivascular sensory nerve endings of the meningeal vessels. Stimulation of these nerve fibers will eventually lead to the release of CGRP, a nociceptor known for its ability to induce migraine and cluster headache attacks.<sup id="cite_ref-Brain2011_1-3" class="reference"><a href="#cite_note-Brain2011-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Activation of TRPA1 by umbellulone results in the opening of this ion channel. Calcium will enter the cell and the cell membrane will be depolarized. Depolarization of the membrane will result in the release of CGRP1. Released CGRP can bind to its CGRP-receptor. This will induce a CGRP-dependent local <a href="/wiki/Vasodilation" title="Vasodilation">vasodilation</a> of the cerebral blood vessels. Vasodilation of the cerebral blood vessels will increase the blood flow to the brain's outer membranes. CGRP binding to its receptor will also promote mast cell degranulation and infiltration by neutrophils and other immune cells. The increase in immune cells and its inflammatory response is thought to be the main cause of the occurrence of migraine. It is still being discussed if vasodilation of the cerebral blood vessels contributes to the cause of the migraine and headaches. Still, the vasodilatory effect and the blood flow increase can be used as an indirect indication for the release of CGRP and therefore for the presence of the migraine and headaches. </p> <div class="mw-heading mw-heading3"><h3 id="TRPM8">TRPM8</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=6" title="Edit section: TRPM8"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/TRPM8" title="TRPM8">Transient receptor potential cation channel, subfamily M, member 8</a> (TRPM8) is an ion channel that is able to induce an intensely cold sensation when activated. Menthol is the primary ligand of TRPM8, but since umbellulone has some structural similarities with menthol, umbellulone is also able to activate TRPM8. But this is a weak interaction. </p> <div class="mw-heading mw-heading2"><h2 id="Indications">Indications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=7" title="Edit section: Indications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Exposure to umbellularia is likely to result in an intense cold sensation in the nasal cavity. When combined with a headache, an increase in plasma CGRP or irritation of the eyes, the possibility for the person to have been exposed to umbellulone increases. </p> <div class="mw-heading mw-heading2"><h2 id="Toxicity">Toxicity</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=8" title="Edit section: Toxicity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The oil of <i>Umbellularia californica</i> contains 40% to 60% of umbellulone. It possesses an effect similar to atropine on the nerves and muscle fibers. Contact with the oil, or exposure to the vapors, can cause: </p> <ul><li>Headache</li> <li>Irritation to eyes</li> <li>Irritation to the nose</li> <li>Irritation of the mucous membrane</li> <li>Loss of concentration</li> <li>Lowering blood pressure</li> <li>Difficulty with respiration</li></ul> <p>Umbellulone induces rapid production of <a href="/wiki/Methemoglobinemia" title="Methemoglobinemia">methemoglobine</a>. Methemoglobine is a globin in the blood that mainly consists of ferric (Fe<sup>3+</sup>) <a href="/wiki/Hemoglobin" title="Hemoglobin">haemoglobin</a>, instead of the usual ferrous (Fe<sup>2+</sup>) haemoglobin. Methemoglobin has a decreased ability to bind oxygen, but, in combination with the 3 other ferrous ions on the hemoglobin unit, the oxygen release is also decreased. Red blood cells will be less able to nurture organs with oxygen, therefore, the probability for hypoxia increases. Methemoglobin lethality is possible at concentrations higher than 50% of the substance in red blood cells. </p><p><i>Umbellularia californica</i> should not be mistaken for the conventional <a href="/wiki/Bay_leaf" title="Bay leaf">bay leaf</a> (<i>Laurus nobilis</i>), which is devoid of these toxic effects. </p> <div class="mw-heading mw-heading2"><h2 id="Other_applications">Other applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=9" title="Edit section: Other applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 2013, a new potential application of <i>Umbellularia californica</i> came to light. The essential oil was used for its mosquito biting deterrent and larvicidal activity.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> This encourages further investigation of this oil. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=10" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Brain2011-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Brain2011_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Brain2011_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Brain2011_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Brain2011_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFNassiniMaterazziVriensPrenen2011" class="citation journal cs1">Nassini, R.; Materazzi, S.; Vriens, J.; Prenen, J.; Benemei, S.; De Siena, G.; La Marca, G.; Andrè, E.; Preti, D.; Avonto, C.; Sadofsky, L.; Di Marzo, V.; De Petrocellis, L.; Dussor, G.; Porreca, F.; Taglialatela-Scafati, O.; Appendino, G.; Nilius, B.; Geppetti, P. (2011). <a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fbrain%2Fawr272">"The 'headache tree' via umbellulone and TRPA1 activates the trigeminovascular system"</a>. <i>Brain</i>. <b>135</b> (Pt 2): 376–390. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fbrain%2Fawr272">10.1093/brain/awr272</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/22036959">22036959</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Brain&rft.atitle=The+%27headache+tree%27+via+umbellulone+and+TRPA1+activates+the+trigeminovascular+system&rft.volume=135&rft.issue=Pt+2&rft.pages=376-390&rft.date=2011&rft_id=info%3Adoi%2F10.1093%2Fbrain%2Fawr272&rft_id=info%3Apmid%2F22036959&rft.aulast=Nassini&rft.aufirst=R.&rft.au=Materazzi%2C+S.&rft.au=Vriens%2C+J.&rft.au=Prenen%2C+J.&rft.au=Benemei%2C+S.&rft.au=De+Siena%2C+G.&rft.au=La+Marca%2C+G.&rft.au=Andr%C3%A8%2C+E.&rft.au=Preti%2C+D.&rft.au=Avonto%2C+C.&rft.au=Sadofsky%2C+L.&rft.au=Di+Marzo%2C+V.&rft.au=De+Petrocellis%2C+L.&rft.au=Dussor%2C+G.&rft.au=Porreca%2C+F.&rft.au=Taglialatela-Scafati%2C+O.&rft.au=Appendino%2C+G.&rft.au=Nilius%2C+B.&rft.au=Geppetti%2C+P.&rft_id=https%3A%2F%2Fdoi.org%2F10.1093%252Fbrain%252Fawr272&rfr_id=info%3Asid%2Fen.wikipedia.org%3AUmbellulone" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRachel_Ehrenberg2011" class="citation news cs1">Rachel Ehrenberg (November 3, 2011). <a rel="nofollow" class="external text" href="http://www.sciencenews.org/view/generic/id/335845/title/Headache_tree_is_a_pain_in_the_brain">"Headache tree is a pain in the brain: Bay laurel swells cranial blood vessels"</a>. <i>ScienceNews</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2011-11-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=ScienceNews&rft.atitle=Headache+tree+is+a+pain+in+the+brain%3A+Bay+laurel+swells+cranial+blood+vessels&rft.date=2011-11-03&rft.au=Rachel+Ehrenberg&rft_id=http%3A%2F%2Fwww.sciencenews.org%2Fview%2Fgeneric%2Fid%2F335845%2Ftitle%2FHeadache_tree_is_a_pain_in_the_brain&rfr_id=info%3Asid%2Fen.wikipedia.org%3AUmbellulone" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHoward1992" class="citation web cs1">Howard, Janet L. (1992). <a rel="nofollow" class="external text" href="https://www.fs.usda.gov/database/feis/plants/tree/umbcal/all.html">"Index of Species Information, Umbellularia californica"</a>. <i><a href="/wiki/United_States_Forest_Service" title="United States Forest Service"> US Forest Service, Fire Effects Information System (FEIS)</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">November 14,</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=US+Forest+Service%2C+Fire+Effects+Information+System+%28FEIS%29&rft.atitle=Index+of+Species+Information%2C+Umbellularia+californica&rft.date=1992&rft.aulast=Howard&rft.aufirst=Janet+L.&rft_id=https%3A%2F%2Fwww.fs.usda.gov%2Fdatabase%2Ffeis%2Fplants%2Ftree%2Fumbcal%2Fall.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AUmbellulone" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmithEastman1956" class="citation journal cs1">Smith, Howard E.; Eastman, Richard H. (1956). <a rel="nofollow" class="external text" href="https://pubs.acs.org/doi/abs/10.1021/jo01113a019">"Synthesis of an Isomer of Umbellulone"</a>. <i>Journal of Organic Chemistry</i>. <b>21</b> (7): 830. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Fjo01113a019">10.1021/jo01113a019</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0022-3263">0022-3263</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Organic+Chemistry&rft.atitle=Synthesis+of+an+Isomer+of+Umbellulone&rft.volume=21&rft.issue=7&rft.pages=830&rft.date=1956&rft_id=info%3Adoi%2F10.1021%2Fjo01113a019&rft.issn=0022-3263&rft.aulast=Smith&rft.aufirst=Howard+E.&rft.au=Eastman%2C+Richard+H.&rft_id=https%3A%2F%2Fpubs.acs.org%2Fdoi%2Fabs%2F10.1021%2Fjo01113a019&rfr_id=info%3Asid%2Fen.wikipedia.org%3AUmbellulone" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTabancaAvontoWangParcher2013" class="citation journal cs1">Tabanca, Nurhayat; Avonto, Cristina; Wang, Mei; Parcher, Jon F.; Ali, Abbas; Demirci, Betul; Raman, Vijayasankar; Khan, Ikhlas A. (2013). "Comparative Investigation of Umbellularia californica and Laurus nobilis Leaf Essential Oils and Identification of Constituents Active against Aedes aegypti". <i>Journal of Agricultural and Food Chemistry</i>. <b>61</b> (50): 12283–12291. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Fjf4052682">10.1021/jf4052682</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/24266426">24266426</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Agricultural+and+Food+Chemistry&rft.atitle=Comparative+Investigation+of+Umbellularia+californica+and+Laurus+nobilis+Leaf+Essential+Oils+and+Identification+of+Constituents+Active+against+Aedes+aegypti&rft.volume=61&rft.issue=50&rft.pages=12283-12291&rft.date=2013&rft_id=info%3Adoi%2F10.1021%2Fjf4052682&rft_id=info%3Apmid%2F24266426&rft.aulast=Tabanca&rft.aufirst=Nurhayat&rft.au=Avonto%2C+Cristina&rft.au=Wang%2C+Mei&rft.au=Parcher%2C+Jon+F.&rft.au=Ali%2C+Abbas&rft.au=Demirci%2C+Betul&rft.au=Raman%2C+Vijayasankar&rft.au=Khan%2C+Ikhlas+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AUmbellulone" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Umbellulone&action=edit&section=11" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDrakeStuhr1935" class="citation journal cs1">Drake, Miles E.; Stuhr, Ernst T. (1935). "Some pharmacological and bactericidal properties of umbellulone". <i>The Journal of the American Pharmaceutical Association</i>. <b>24</b> (3): 196–207. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2Fjps.3080240304">10.1002/jps.3080240304</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+the+American+Pharmaceutical+Association&rft.atitle=Some+pharmacological+and+bactericidal+properties+of+umbellulone&rft.volume=24&rft.issue=3&rft.pages=196-207&rft.date=1935&rft_id=info%3Adoi%2F10.1002%2Fjps.3080240304&rft.aulast=Drake&rft.aufirst=Miles+E.&rft.au=Stuhr%2C+Ernst+T.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AUmbellulone" class="Z3988"></span></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist 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abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Terpenoids" title="Template:Terpenoids"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Terpenoids" title="Template talk:Terpenoids"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Terpenoids" title="Special:EditPage/Template:Terpenoids"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Types_of_terpenes_and_terpenoids_(#_of_isoprene_units)" style="font-size:114%;margin:0 4em">Types of <a href="/wiki/Terpene" title="Terpene">terpenes</a> and <a href="/wiki/Terpenoid" title="Terpenoid">terpenoids</a> (# of <a href="/wiki/Isoprene" title="Isoprene">isoprene</a> units)</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Basic forms:</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Acyclic (linear, <i>cis</i> and <i>trans</i> forms)</li> <li>Monocyclic (single ring)</li> <li>Bicyclic (2 rings)</li> <li><a href="/wiki/Iridoid" title="Iridoid">Iridoids</a> (cyclopentane ring)</li> <li>Iridoid glycosides (iridoids bound to a sugar)</li> <li><a href="/wiki/Steroid" title="Steroid">Steroids</a> (4 rings)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hemiterpenoid" class="mw-redirect" title="Hemiterpenoid">Hemiterpenoids</a> (1)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Isoprene" title="Isoprene">Isoprene</a> (C<sub>5</sub>H<sub>8</sub>)</li> <li><a href="/wiki/Prenol" title="Prenol">Prenol</a></li> <li><a href="/wiki/Isovaleric_acid" title="Isovaleric acid">Isovaleric acid</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Monoterpene" title="Monoterpene">Monoterpenes</a> <br />(C<sub>10</sub>H<sub>16</sub>)(2)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Acyclic</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ocimene" title="Ocimene">Ocimene</a></li> <li><a href="/wiki/Myrcene" title="Myrcene">Myrcenes</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Monocyclic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Limonene" title="Limonene">Limonene</a></li> <li><a href="/wiki/Terpinene" title="Terpinene">Terpinene</a></li> <li><a href="/wiki/Phellandrene" title="Phellandrene">Phellandrene</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Bicyclic</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pinene" title="Pinene">Pinene</a> (<a href="/wiki/Alpha-Pinene" class="mw-redirect" title="Alpha-Pinene">α</a> and <a href="/wiki/Beta-Pinene" class="mw-redirect" title="Beta-Pinene">β</a>)</li> <li><a href="/wiki/Camphene" title="Camphene">Camphene</a></li> <li><a href="/wiki/Thujene" title="Thujene">Thujene</a></li> <li><a href="/wiki/Sabinene" title="Sabinene">Sabinene</a></li> <li><a href="/wiki/Carene" class="mw-redirect" title="Carene">Carene</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Monoterpenoids <br />(2,modified)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Acyclic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Citronellal" title="Citronellal">Citronellal</a></li> <li><a href="/wiki/Citral" title="Citral">Citral</a></li> <li><a href="/wiki/Citronellol" title="Citronellol">Citronellol</a></li> <li><a href="/wiki/Geraniol" title="Geraniol">Geraniol</a></li> <li><a href="/wiki/Geranyl_pyrophosphate" title="Geranyl pyrophosphate">Geranyl pyrophosphate</a></li> <li><a href="/wiki/Halomon" title="Halomon">Halomon</a></li> <li><a href="/wiki/Linalool" title="Linalool">Linalool</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Monocyclic</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Grapefruit_mercaptan" title="Grapefruit mercaptan">Grapefruit mercaptan</a></li> <li><a href="/wiki/Menthol" title="Menthol">Menthol</a></li> <li><a href="/wiki/P-Cymene" title="P-Cymene">p-Cymene</a></li> <li><a href="/wiki/Thujaplicin" title="Thujaplicin">Thujaplicins</a> (<a href="/wiki/Hinokitiol" title="Hinokitiol">Hinokitiol</a>)</li> <li><a href="/wiki/Thymol" title="Thymol">Thymol</a></li> <li><a href="/wiki/Perillyl_alcohol" title="Perillyl alcohol">Perillyl alcohol</a></li> <li><a href="/wiki/Carvacrol" title="Carvacrol">Carvacrol</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Bicyclic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Camphor" title="Camphor">Camphor</a></li> <li><a href="/wiki/Borneol" title="Borneol">Borneol</a></li> <li><a href="/wiki/Bornyl_acetate" title="Bornyl acetate">Bornyl acetate</a></li> <li><a href="/wiki/Eucalyptol" title="Eucalyptol">Eucalyptol</a></li> <li><a href="/wiki/Ascaridole" title="Ascaridole">Ascaridole</a></li> <li><a class="mw-selflink selflink">Umbellulone</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Sesquiterpenoids" class="mw-redirect" title="Sesquiterpenoids">Sesquiterpenoids</a> (3)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Artemisinin" title="Artemisinin">Artemisinin</a></li> <li><a href="/wiki/Bisabolol" title="Bisabolol">Bisabolol</a></li> <li><a href="/wiki/Cadinene" class="mw-redirect" title="Cadinene">Cadinene</a></li> <li><a href="/wiki/Cadinol" title="Cadinol">Cadinol</a></li> <li><a href="/wiki/Cedrene" title="Cedrene">Cedrene</a></li> <li>Chanootin</li> <li><a href="/wiki/Farnesyl_pyrophosphate" title="Farnesyl pyrophosphate">Farnesyl pyrophosphate</a></li> <li>Juniperol</li> <li><a href="/wiki/Longifolene" title="Longifolene">Longifolene</a></li> <li>Muurolene</li> <li>Nootkatin</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Terpenoid" title="Terpenoid">Diterpenoids</a> (4)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Acyclic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Phytol" title="Phytol">Phytol</a></li> <li><a href="/wiki/Geranylgeranyl_pyrophosphate" title="Geranylgeranyl pyrophosphate">Geranylgeranyl pyrophosphate</a></li> <li>Geranyl-linalool</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Monocyclic</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Retinol" title="Retinol">Retinol</a></li> <li><a href="/wiki/Retinal" title="Retinal">Retinal</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Bicyclic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i>cis</i>-Abienol</li> <li>Epimanool</li> <li><a href="/wiki/Salvinorin_A" title="Salvinorin A">Salvinorin A</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tricyclic</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cembrene" class="mw-redirect" title="Cembrene">Cembrene</a></li> <li><a href="/wiki/Forskolin" title="Forskolin">Forskolin</a></li> <li>Manoyl oxide</li> <li>Pimaral</li> <li>Pimarol</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tetracyclic</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aphidicolin" title="Aphidicolin">Aphidicolin</a></li> <li><a href="/wiki/Gibberellin" title="Gibberellin">Gibberellin</a></li> <li><a href="/wiki/Paclitaxel" title="Paclitaxel">Paclitaxel</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Resin_acid" title="Resin acid">Resin acids</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abietic_acid" title="Abietic acid">Abietic acid</a></li> <li>Communic acid</li> <li>Dehydroabietic acid</li> <li><a href="/wiki/Isopimaric_acid" title="Isopimaric acid">Isopimaric acid</a></li> <li>Lambertianic acid</li> <li><a href="/wiki/Levopimaric_acid" title="Levopimaric acid">Levopimaric acid</a></li> <li>Mercusic acid</li> <li>Neoabietic acid</li> <li><a href="/wiki/Pimaric_acid" title="Pimaric acid">Pimaric acid</a></li> <li>Sandaracopimaric acid</li> <li>Secodehydroabietic acid</li> <li>Palustric acid</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Sesterterpenoid" class="mw-redirect" title="Sesterterpenoid">Sesterterpenoids</a> (5)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Geranylfarnesol</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Triterpenoid" class="mw-redirect" title="Triterpenoid">Triterpenoids</a> (6)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Steroid" title="Steroid">Steroids</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Phytosterol" title="Phytosterol">Phytosterols</a> <ul><li><a href="/wiki/Campesterol" title="Campesterol">Campesterol</a></li> <li>Citrostadienol</li> <li><a href="/wiki/Cycloartenol" title="Cycloartenol">Cycloartenol</a></li> <li><a href="/wiki/Sitostanol" class="mw-redirect" title="Sitostanol">Sitostanol</a></li> <li><a href="/wiki/Sitosterol" class="mw-redirect" title="Sitosterol">Sitosterol</a></li> <li><a href="/wiki/Stigmasterol" title="Stigmasterol">Stigmasterol</a></li></ul></li> <li><a href="/wiki/Tocopherol" title="Tocopherol">Tocopherols</a></li> <li><a href="/wiki/Cholesterol" title="Cholesterol">Cholesterol</a></li> <li><a href="/wiki/Testosterone" title="Testosterone">Testosterone</a></li> <li><a href="/wiki/Cholecalciferol" title="Cholecalciferol">Cholecalciferol</a></li> <li><a href="/wiki/Ecdysone" title="Ecdysone">Ecdysones</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Betulin" title="Betulin">Betulin</a></li> <li><a href="/wiki/Lanosterol" title="Lanosterol">Lanosterol</a></li> <li><a href="/wiki/Saponin" title="Saponin">Saponins</a></li> <li>Serratenediol</li> <li><a href="/wiki/Squalane" title="Squalane">Squalane</a></li> <li>Acids <ul><li><a href="/wiki/Oleanolic_acid" title="Oleanolic acid">Oleanolic acid</a></li> <li><a href="/wiki/Ursolic_acid" title="Ursolic acid">Ursolic acid</a></li> <li><a href="/wiki/Betulinic_acid" title="Betulinic acid">Betulinic acid</a></li> <li><a href="/wiki/Moronic_acid" title="Moronic acid">Moronic acid</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Sesquarterpenes/oids (7)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Ferrugicadiol</li> <li>Tetraprenylcurcumene</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tetraterpenoid" class="mw-redirect" title="Tetraterpenoid">Tetraterpenoids</a><br />(<a href="/wiki/Carotenoid" title="Carotenoid">Carotenoids</a>) (8)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Carotene" title="Carotene">Carotenes</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alpha-Carotene" class="mw-redirect" title="Alpha-Carotene">Alpha-Carotene</a></li> <li><a href="/wiki/Beta-Carotene" class="mw-redirect" title="Beta-Carotene">Beta-Carotene</a></li> <li><a href="/wiki/Gamma-Carotene" class="mw-redirect" title="Gamma-Carotene">Gamma-Carotene</a></li> <li><a href="/wiki/Delta-Carotene" class="mw-redirect" title="Delta-Carotene">Delta-Carotene</a></li> <li><a href="/wiki/Lycopene" title="Lycopene">Lycopene</a></li> <li><a href="/wiki/Neurosporene" title="Neurosporene">Neurosporene</a></li> <li><a href="/wiki/Phytofluene" title="Phytofluene">Phytofluene</a></li> <li><a href="/wiki/Phytoene" title="Phytoene">Phytoene</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Xanthophyll" title="Xanthophyll">Xanthophylls</a>:</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Canthaxanthin" title="Canthaxanthin">Canthaxanthin</a></li> <li><a href="/wiki/Cryptoxanthin" class="mw-redirect" title="Cryptoxanthin">Cryptoxanthin</a></li> <li><a href="/wiki/Zeaxanthin" title="Zeaxanthin">Zeaxanthin</a></li> <li><a href="/wiki/Astaxanthin" title="Astaxanthin">Astaxanthin</a></li> <li><a href="/wiki/Lutein" title="Lutein">Lutein</a></li> <li><a href="/wiki/Rubixanthin" title="Rubixanthin">Rubixanthin</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Polyterpenoid" class="mw-redirect" title="Polyterpenoid">Polyterpenoids</a> (many)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Natural_rubber" title="Natural rubber">Natural rubber</a></li> <li><a href="/wiki/Gutta_percha" class="mw-redirect" title="Gutta percha">Gutta percha</a></li> <li>Gutta-balatá</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Norisoprenoids (modified)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>3-oxo-α-ionol</li> <li>7,8-dihydroionone</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Synthesis</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Terpene synthase enzymes (many), having in common a <a href="/wiki/Terpene_synthase_N_terminal_domain" title="Terpene synthase N terminal domain">terpene synthase N terminal domain</a> (<a href="/wiki/Protein_domain" title="Protein domain">protein domain</a>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Activated isoprene forms</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Isopentenyl_pyrophosphate" title="Isopentenyl pyrophosphate">Isopentenyl pyrophosphate</a> (IPP)</li> <li><a href="/wiki/Dimethylallyl_pyrophosphate" title="Dimethylallyl pyrophosphate">Dimethylallyl pyrophosphate</a> (DMAPP)</li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="TRP_channel_modulators" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Transient_receptor_potential_channel_modulators" title="Template:Transient receptor potential channel modulators"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Transient_receptor_potential_channel_modulators" title="Template talk:Transient receptor potential channel modulators"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Transient_receptor_potential_channel_modulators" title="Special:EditPage/Template:Transient receptor potential channel modulators"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="TRP_channel_modulators" style="font-size:114%;margin:0 4em"><a href="/wiki/Transient_receptor_potential_channel" title="Transient receptor potential channel"><abbr title="Transient receptor potential">TRP</abbr> channel</a> <a href="/wiki/Channel_modulator" title="Channel modulator">modulators</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><abbr title="Transient receptor potential ankyrin channel"><a href="/wiki/TRPA_(ion_channel)" title="TRPA (ion channel)">TRPA</a></abbr></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Activators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/4-Hydroxynonenal" title="4-Hydroxynonenal">4-Hydroxynonenal</a></li> <li><a href="/wiki/4-Oxo-2-nonenal" title="4-Oxo-2-nonenal">4-Oxo-2-nonenal</a></li> <li><a href="/wiki/Epoxyeicosatrienoic_acid" title="Epoxyeicosatrienoic acid">4,5-EET</a></li> <li><a href="/wiki/Epoxyeicosatrienoic_acid" title="Epoxyeicosatrienoic acid">12S-HpETE</a></li> <li><a href="/wiki/Cyclopentenone_prostaglandins" title="Cyclopentenone prostaglandins">15-Deoxy-Δ<sup>12,14</sup>-prostaglandin J2</a></li> <li><a href="/wiki/Hydroxy_alpha_sanshool" class="mw-redirect" title="Hydroxy alpha sanshool">α-Sanshool</a> (<a href="/wiki/Ginger" title="Ginger">ginger</a>, <a href="/wiki/Sichuan_pepper" title="Sichuan pepper">Sichuan</a> and <a href="/wiki/Grains_of_paradise" title="Grains of paradise">melegueta peppers</a>)</li> <li><a href="/wiki/Acrolein" title="Acrolein">Acrolein</a></li> <li><a href="/wiki/Allicin" title="Allicin">Allicin</a> (<a href="/wiki/Garlic" title="Garlic">garlic</a>)</li> <li><a href="/wiki/Allyl_isothiocyanate" title="Allyl isothiocyanate">Allyl isothiocyanate</a> (<a href="/wiki/Mustard_plant" title="Mustard plant">mustard</a>, <a href="/wiki/Radish" title="Radish">radish</a>, <a href="/wiki/Horseradish" title="Horseradish">horseradish</a>, <a href="/wiki/Wasabi" title="Wasabi">wasabi</a>)</li> <li><a href="/wiki/AM404" title="AM404">AM404</a></li> <li><a href="/wiki/ASP-7663" title="ASP-7663">ASP-7663</a></li> <li><a href="/wiki/Bradykinin" title="Bradykinin">Bradykinin</a></li> <li><a href="/wiki/Cannabichromene" title="Cannabichromene">Cannabichromene</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cannabidiol" title="Cannabidiol">Cannabidiol</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cannabigerol" title="Cannabigerol">Cannabigerol</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cinnamaldehyde" title="Cinnamaldehyde">Cinnamaldehyde</a> (<a href="/wiki/Cinnamon" title="Cinnamon">cinnamon</a>)</li> <li><a href="/wiki/CR_gas" title="CR gas">CR gas (dibenzoxazepine; DBO)</a></li> <li><a href="/wiki/CS_gas" title="CS gas">CS gas (2-chlorobenzal malononitrile)</a></li> <li><a href="/wiki/Cuminaldehyde" title="Cuminaldehyde">Cuminaldehyde</a> (<a href="/wiki/Cumin" title="Cumin">cumin</a>)</li> <li><a href="/wiki/Curcumin" title="Curcumin">Curcumin</a> (<a href="/wiki/Turmeric" title="Turmeric">turmeric</a>)</li> <li><a href="/w/index.php?title=Dehydroligustilide&action=edit&redlink=1" class="new" title="Dehydroligustilide (page does not exist)">Dehydroligustilide</a> (<a href="/wiki/Celery" title="Celery">celery</a>)</li> <li><a href="/wiki/Diallyl_disulfide" title="Diallyl disulfide">Diallyl disulfide</a></li> <li><a href="/wiki/Dicentrine" title="Dicentrine">Dicentrine</a> (<i><a href="/wiki/Lindera" title="Lindera">Lindera</a></i> spp.)</li> <li><a href="/w/index.php?title=Farnesyl_thiosalicylic_acid&action=edit&redlink=1" class="new" title="Farnesyl thiosalicylic acid (page does not exist)">Farnesyl thiosalicylic acid</a></li> <li><a href="/wiki/Formalin" class="mw-redirect" title="Formalin">Formalin</a></li> <li><a href="/wiki/Gingerol" title="Gingerol">Gingerols</a> (<a href="/wiki/Ginger" title="Ginger">ginger</a>)</li> <li><a href="/wiki/Hepoxilin_A3" class="mw-redirect" title="Hepoxilin A3">Hepoxilin A3</a></li> <li><a href="/wiki/Hepoxilin_B3" class="mw-redirect" title="Hepoxilin B3">Hepoxilin B3</a></li> <li><a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide">Hydrogen peroxide</a></li> <li><a href="/wiki/Icilin" title="Icilin">Icilin</a></li> <li><a href="/wiki/Isothiocyanate" title="Isothiocyanate">Isothiocyanate</a></li> <li><a href="/wiki/JT-010" title="JT-010">JT-010</a></li> <li><a href="/wiki/Ligustilide" title="Ligustilide">Ligustilide</a> (<a href="/wiki/Celery" title="Celery">celery</a>, <i><a href="/wiki/Angelica_acutiloba" title="Angelica acutiloba">Angelica acutiloba</a></i>)</li> <li><a href="/wiki/Linalool" title="Linalool">Linalool</a> (<a href="/wiki/Sichuan_pepper" title="Sichuan pepper">Sichuan pepper</a>, <a href="/wiki/Thyme" title="Thyme">thyme</a>)</li> <li><a href="/wiki/Methylglyoxal" title="Methylglyoxal">Methylglyoxal</a></li> <li><a href="/wiki/Methyl_salicylate" title="Methyl salicylate">Methyl salicylate</a> (<a href="/wiki/Wintergreen" title="Wintergreen">wintergreen</a>)</li> <li><a href="/wiki/N-Methylmaleimide" title="N-Methylmaleimide">N-Methylmaleimide</a></li> <li><a href="/wiki/Nicotine" title="Nicotine">Nicotine</a> (<a href="/wiki/Tobacco" title="Tobacco">tobacco</a>)</li> <li><a href="/wiki/Oleocanthal" title="Oleocanthal">Oleocanthal</a> (<a href="/wiki/Olive_oil" title="Olive oil">olive oil</a>)</li> <li><a href="/wiki/Paclitaxel" title="Paclitaxel">Paclitaxel</a> (<a href="/wiki/Taxus_brevifolia" title="Taxus brevifolia">Pacific yew</a>)</li> <li><a href="/wiki/Paracetamol" title="Paracetamol">Paracetamol (acetaminophen)</a></li> <li><a href="/wiki/PF-4840154" title="PF-4840154">PF-4840154</a></li> <li><a href="/wiki/Phenacyl_chloride" title="Phenacyl chloride">Phenacyl chloride</a></li> <li><a href="/wiki/Polygodial" title="Polygodial">Polygodial</a> (<a href="/wiki/Tasmannia_stipitata" title="Tasmannia stipitata">Dorrigo pepper</a>)</li> <li><a href="/wiki/Shogaol" title="Shogaol">Shogaols</a> (<a href="/wiki/Ginger" title="Ginger">ginger</a>, <a href="/wiki/Sichuan_pepper" title="Sichuan pepper">Sichuan</a> and <a href="/wiki/Grains_of_paradise" title="Grains of paradise">melegueta peppers</a>)</li> <li><a href="/wiki/Tear_gas" title="Tear gas">Tear gases</a></li> <li><a href="/wiki/Tetrahydrocannabinol" title="Tetrahydrocannabinol">Tetrahydrocannabinol</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Tetrahydrocannabiorcol" title="Tetrahydrocannabiorcol">Tetrahydrocannabiorcol</a></li> <li><a href="/wiki/Syn-Propanethial-S-oxide" title="Syn-Propanethial-S-oxide">Thiopropanal S-oxide</a> (<a href="/wiki/Onion" title="Onion">onion</a>)</li> <li><a class="mw-selflink selflink">Umbellulone</a> (<i>Umbellularia californica</i>)</li> <li><a href="/wiki/WIN_55,212-2" title="WIN 55,212-2">WIN 55,212-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Blockers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/A-967079" title="A-967079">A-967079</a></li> <li><a href="/wiki/AM-0902" title="AM-0902">AM-0902</a></li> <li><a href="/w/index.php?title=Dehydroligustilide&action=edit&redlink=1" class="new" title="Dehydroligustilide (page does not exist)">Dehydroligustilide</a> (<a href="/wiki/Celery" title="Celery">celery</a>)</li> <li><a href="/wiki/HC-030031" title="HC-030031">HC-030031</a></li> <li><a href="/wiki/Nicotine" title="Nicotine">Nicotine</a> (<a href="/wiki/Tobacco" title="Tobacco">tobacco</a>)</li> <li><a href="/wiki/PF-04745637" title="PF-04745637">PF-04745637</a></li> <li><a href="/wiki/Ruthenium_red" title="Ruthenium red">Ruthenium red</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><abbr title="Transient receptor potential canonical channel"><a href="/wiki/TRPC" title="TRPC">TRPC</a></abbr></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Activators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adhyperforin" title="Adhyperforin">Adhyperforin</a> (<a href="/wiki/Hypericum_perforatum" title="Hypericum perforatum">St John's wort</a>)</li> <li><a href="/wiki/Diglyceride" title="Diglyceride">Diacyl glycerol</a></li> <li><a href="/wiki/GSK1702934A" title="GSK1702934A">GSK1702934A</a></li> <li><a href="/wiki/Hyperforin" title="Hyperforin">Hyperforin</a> (<a href="/wiki/Hypericum_perforatum" title="Hypericum perforatum">St John's wort</a>)</li> <li><a href="/wiki/Substance_P" title="Substance P">Substance P</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Blockers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=3%E2%80%B2-5-Dichlorodiphenylamine-2-carboxylic_acid&action=edit&redlink=1" class="new" title="3′-5-Dichlorodiphenylamine-2-carboxylic acid (page does not exist)">DCDPC</a></li> <li><a href="/wiki/Dehydroepiandrosterone_sulfate" title="Dehydroepiandrosterone sulfate">DHEA-S</a></li> <li><a href="/wiki/Flufenamic_acid" title="Flufenamic acid">Flufenamic acid</a></li> <li><a href="/wiki/GSK417651A" title="GSK417651A">GSK417651A</a></li> <li><a href="/w/index.php?title=GSK2293017A&action=edit&redlink=1" class="new" title="GSK2293017A (page does not exist)">GSK2293017A</a></li> <li><a href="/wiki/Meclofenamic_acid" title="Meclofenamic acid">Meclofenamic acid</a></li> <li><a href="/wiki/N-(p-Amylcinnamoyl)anthranilic_acid" title="N-(p-Amylcinnamoyl)anthranilic acid">N-(p-Amylcinnamoyl)anthranilic acid</a></li> <li><a href="/wiki/Niflumic_acid" title="Niflumic acid">Niflumic acid</a></li> <li><a href="/wiki/Pregnenolone_sulfate" title="Pregnenolone sulfate">Pregnenolone sulfate</a></li> <li><a href="/wiki/Progesterone" title="Progesterone">Progesterone</a></li> <li><a href="/w/index.php?title=Pyr3&action=edit&redlink=1" class="new" title="Pyr3 (page does not exist)">Pyr3</a></li> <li><a href="/wiki/Tolfenamic_acid" title="Tolfenamic acid">Tolfenamic acid</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><abbr title="Transient receptor potential melastatin channel"><a href="/wiki/TRPM" title="TRPM">TRPM</a></abbr></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Activators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adenosine_diphosphate_ribose" title="Adenosine diphosphate ribose">ADP-ribose</a></li> <li><a href="/w/index.php?title=BCTC_(drug)&action=edit&redlink=1" class="new" title="BCTC (drug) (page does not exist)">BCTC</a></li> <li><a href="/wiki/Calcium" title="Calcium">Calcium</a> (intracellular)</li> <li><a href="/wiki/CIM-0216" title="CIM-0216">CIM-0216</a></li> <li><a href="/wiki/Cold" title="Cold">Cold</a></li> <li><a href="/w/index.php?title=Coolact_P&action=edit&redlink=1" class="new" title="Coolact P (page does not exist)">Coolact P</a></li> <li><a href="/wiki/Cooling_Agent_10" class="mw-redirect" title="Cooling Agent 10">Cooling Agent 10</a></li> <li><a href="/wiki/Eucalyptol" title="Eucalyptol">Eucalyptol</a> (<a href="/wiki/Eucalyptus" title="Eucalyptus">eucalyptus</a>)</li> <li><a href="/w/index.php?title=Frescolat_MGA&action=edit&redlink=1" class="new" title="Frescolat MGA (page does not exist)">Frescolat MGA</a></li> <li><a href="/w/index.php?title=Frescolat_ML&action=edit&redlink=1" class="new" title="Frescolat ML (page does not exist)">Frescolat ML</a></li> <li><a href="/wiki/Geraniol" title="Geraniol">Geraniol</a></li> <li><a href="/wiki/Hydroxycitronellal" title="Hydroxycitronellal">Hydroxycitronellal</a></li> <li><a href="/wiki/Icilin" title="Icilin">Icilin</a></li> <li><a href="/wiki/Linalool" title="Linalool">Linalool</a></li> <li><a href="/wiki/Menthol" title="Menthol">Menthol</a> (<a href="/wiki/Mentha" title="Mentha">mint</a>)</li> <li><a href="/w/index.php?title=PMD_38&action=edit&redlink=1" class="new" title="PMD 38 (page does not exist)">PMD 38</a></li> <li><a href="/wiki/Pregnenolone_sulfate" title="Pregnenolone sulfate">Pregnenolone sulfate</a></li> <li><a href="/w/index.php?title=Rutamarin&action=edit&redlink=1" class="new" title="Rutamarin (page does not exist)">Rutamarin</a> (<i><a href="/wiki/Ruta_graveolens" title="Ruta graveolens">Ruta graveolens</a></i>)</li> <li><a href="/wiki/Steviol_glycoside" title="Steviol glycoside">Steviol glycosides</a> (e.g., <a href="/wiki/Stevioside" title="Stevioside">stevioside</a>) (<i><a href="/wiki/Stevia_rebaudiana" title="Stevia rebaudiana">Stevia rebaudiana</a></i>)</li> <li>Sweet <a href="/wiki/Taste" title="Taste">tastants</a> (e.g., <a href="/wiki/Glucose" title="Glucose">glucose</a>, <a href="/wiki/Fructose" title="Fructose">fructose</a>, <a href="/wiki/Sucrose" title="Sucrose">sucrose</a>; indirectly)</li> <li><a href="/w/index.php?title=Thio-BCTC&action=edit&redlink=1" class="new" title="Thio-BCTC (page does not exist)">Thio-BCTC</a></li> <li><a href="/wiki/WS-12" class="mw-redirect" title="WS-12">WS-12</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Blockers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AMG-333" title="AMG-333">AMG-333</a></li> <li><a href="/wiki/Capsazepine" title="Capsazepine">Capsazepine</a></li> <li><a href="/wiki/Clotrimazole" title="Clotrimazole">Clotrimazole</a></li> <li><a href="/w/index.php?title=3%E2%80%B2-5-Dichlorodiphenylamine-2-carboxylic_acid&action=edit&redlink=1" class="new" title="3′-5-Dichlorodiphenylamine-2-carboxylic acid (page does not exist)">DCDPC</a></li> <li><a href="/w/index.php?title=Elismetrep&action=edit&redlink=1" class="new" title="Elismetrep (page does not exist)">Elismetrep</a></li> <li><a href="/wiki/Flufenamic_acid" title="Flufenamic acid">Flufenamic acid</a></li> <li><a href="/wiki/Meclofenamic_acid" title="Meclofenamic acid">Meclofenamic acid</a></li> <li><a href="/wiki/Mefenamic_acid" title="Mefenamic acid">Mefenamic acid</a></li> <li><a href="/wiki/N-(p-Amylcinnamoyl)anthranilic_acid" title="N-(p-Amylcinnamoyl)anthranilic acid">N-(p-Amylcinnamoyl)anthranilic acid</a></li> <li><a href="/wiki/Nicotine" title="Nicotine">Nicotine</a> (<a href="/wiki/Tobacco" title="Tobacco">tobacco</a>)</li> <li><a href="/wiki/Niflumic_acid" title="Niflumic acid">Niflumic acid</a></li> <li><a href="/wiki/Ononetin" title="Ononetin">Ononetin</a></li> <li><a href="/wiki/PF-05105679" title="PF-05105679">PF-05105679</a></li> <li><a href="/wiki/RQ-00203078" title="RQ-00203078">RQ-00203078</a></li> <li><a href="/wiki/Ruthenium_red" title="Ruthenium red">Ruthenium red</a></li> <li><a href="/w/index.php?title=Rutamarin&action=edit&redlink=1" class="new" title="Rutamarin (page does not exist)">Rutamarin</a> (<i><a href="/wiki/Ruta_graveolens" title="Ruta graveolens">Ruta graveolens</a></i>)</li> <li><a href="/wiki/Tolfenamic_acid" title="Tolfenamic acid">Tolfenamic acid</a></li> <li><a href="/wiki/Triphenylphosphine_oxide" title="Triphenylphosphine oxide">TPPO</a></li> <li><a href="/wiki/TRPM4-IN-5" title="TRPM4-IN-5">TRPM4-IN-5</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><abbr title="Transient receptor potential mucolipin channel"><a href="/wiki/TRPML" title="TRPML">TRPML</a></abbr></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Activators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=EVP21&action=edit&redlink=1" class="new" title="EVP21 (page does not exist)">EVP21</a></li> <li><a href="/wiki/MK6-83" title="MK6-83">MK6-83</a></li> <li><a href="/wiki/ML-SA1" title="ML-SA1">ML-SA1</a></li> <li><a href="/wiki/ML2-SA1" title="ML2-SA1">ML2-SA1</a></li> <li><a href="/wiki/Phosphatidylinositol_3,5-bisphosphate" title="Phosphatidylinositol 3,5-bisphosphate">PI(3,5)P<sub>2</sub></a></li> <li><a href="/w/index.php?title=SF-22&action=edit&redlink=1" class="new" title="SF-22 (page does not exist)">SF-22</a></li> <li><a href="/wiki/SN-2" title="SN-2">SN-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Blockers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ML-SI3" title="ML-SI3">ML-SI3</a></li> <li><a href="/wiki/Phosphatidylinositol_4,5-bisphosphate" title="Phosphatidylinositol 4,5-bisphosphate">PI(4,5)P<sub>2</sub></a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><abbr title="Transient receptor potential polycystin channel"><a href="/wiki/TRPP" title="TRPP">TRPP</a></abbr></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Activators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Triptolide" title="Triptolide">Triptolide</a> (<i><a href="/wiki/Tripterygium_wilfordii" title="Tripterygium wilfordii">Tripterygium wilfordii</a></i>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Blockers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ruthenium_red" title="Ruthenium red">Ruthenium red</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><abbr title="Transient receptor potential vanilloid channel"><a href="/wiki/TRPV" title="TRPV">TRPV</a></abbr></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Activators</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/2-Aminoethoxydiphenyl_borate" title="2-Aminoethoxydiphenyl borate">2-APB</a></li> <li><a href="/wiki/Epoxyeicosatrienoic_acid" title="Epoxyeicosatrienoic acid">5',6'-EET</a></li> <li><a href="/wiki/9-Hydroxyoctadecadienoic_acid" title="9-Hydroxyoctadecadienoic acid">9-HODE</a></li> <li><a href="/wiki/9-Hydroxyoctadecadienoic_acid" title="9-Hydroxyoctadecadienoic acid">9-oxoODE</a></li> <li><a href="/wiki/Epoxyeicosatrienoic_acid" title="Epoxyeicosatrienoic acid">12S-HETE</a></li> <li><a href="/wiki/Epoxyeicosatrienoic_acid" title="Epoxyeicosatrienoic acid">12S-HpETE</a></li> <li><a href="/wiki/13-Hydroxyoctadecadienoic_acid" title="13-Hydroxyoctadecadienoic acid">13-HODE</a></li> <li><a href="/wiki/13-Hydroxyoctadecadienoic_acid" title="13-Hydroxyoctadecadienoic acid">13-oxoODE</a></li> <li><a href="/wiki/20-Hydroxyeicosatetraenoic_acid" title="20-Hydroxyeicosatetraenoic acid">20-HETE</a></li> <li><a href="/wiki/Hydroxy_alpha_sanshool" class="mw-redirect" title="Hydroxy alpha sanshool">α-Sanshool</a> (<a href="/wiki/Ginger" title="Ginger">ginger</a>, <a href="/wiki/Sichuan_pepper" title="Sichuan pepper">Sichuan</a> and <a href="/wiki/Grains_of_paradise" title="Grains of paradise">melegueta peppers</a>)</li> <li><a href="/wiki/Allicin" title="Allicin">Allicin</a> (<a href="/wiki/Garlic" title="Garlic">garlic</a>)</li> <li><a href="/wiki/AM404" title="AM404">AM404</a></li> <li><a href="/wiki/Anandamide" title="Anandamide">Anandamide</a></li> <li><a href="/w/index.php?title=Bisandrographolide&action=edit&redlink=1" class="new" title="Bisandrographolide (page does not exist)">Bisandrographolide</a> (<i><a href="/wiki/Andrographis_paniculata" title="Andrographis paniculata">Andrographis paniculata</a></i>)</li> <li><a href="/wiki/Camphor" title="Camphor">Camphor</a> (<a href="/wiki/Cinnamomum_camphora" class="mw-redirect" title="Cinnamomum camphora">camphor laurel</a>, <a href="/wiki/Rosemary" title="Rosemary">rosemary</a>, <a href="/wiki/Camphorweed" title="Camphorweed">camphorweed</a>, <a href="/wiki/African_blue_basil" title="African blue basil">African blue basil</a>, <a href="/wiki/Ocimum_kilimandscharicum" title="Ocimum kilimandscharicum">camphor basil</a>)</li> <li><a href="/wiki/Cannabidiol" title="Cannabidiol">Cannabidiol</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cannabidivarin" title="Cannabidivarin">Cannabidivarin</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Capsaicin" title="Capsaicin">Capsaicin</a> (<a href="/wiki/Chili_pepper" title="Chili pepper">chili pepper</a>)</li> <li><a href="/wiki/Carvacrol" title="Carvacrol">Carvacrol</a> (<a href="/wiki/Oregano" title="Oregano">oregano</a>, <a href="/wiki/Thyme" title="Thyme">thyme</a>, <a href="/wiki/Lepidium" title="Lepidium">pepperwort</a>, <a href="/wiki/Monarda_fistulosa" title="Monarda fistulosa">wild bergamot</a>, others)</li> <li><a href="/wiki/Dehydroepiandrosterone" title="Dehydroepiandrosterone">DHEA</a></li> <li><a href="/wiki/Diglyceride" title="Diglyceride">Diacyl glycerol</a></li> <li><a href="/wiki/Dihydrocapsaicin" title="Dihydrocapsaicin">Dihydrocapsaicin</a> (<a href="/wiki/Chili_pepper" title="Chili pepper">chili pepper</a>)</li> <li><a href="/wiki/Estradiol" title="Estradiol">Estradiol</a></li> <li><a href="/wiki/Eugenol" title="Eugenol">Eugenol</a> (<a href="/wiki/Basil" title="Basil">basil</a>, <a href="/wiki/Clove" title="Clove">clove</a>)</li> <li><a href="/wiki/Evodiamine" title="Evodiamine">Evodiamine</a> (<i><a href="/wiki/Tetradium_ruticarpum" title="Tetradium ruticarpum">Euodia ruticarpa</a></i>)</li> <li><a href="/wiki/Gingerol" title="Gingerol">Gingerols</a> (<a href="/wiki/Ginger" title="Ginger">ginger</a>)</li> <li><a href="/wiki/GSK1016790A" title="GSK1016790A">GSK1016790A</a></li> <li><a href="/wiki/Heat" title="Heat">Heat</a></li> <li><a href="/wiki/Hepoxilin_A3" class="mw-redirect" title="Hepoxilin A3">Hepoxilin A3</a></li> <li><a href="/wiki/Hepoxilin_B3" class="mw-redirect" title="Hepoxilin B3">Hepoxilin B3</a></li> <li><a href="/wiki/Homocapsaicin" title="Homocapsaicin">Homocapsaicin</a> (<a href="/wiki/Chili_pepper" title="Chili pepper">chili pepper</a>)</li> <li><a href="/wiki/Homodihydrocapsaicin" title="Homodihydrocapsaicin">Homodihydrocapsaicin</a> (<a href="/wiki/Chili_pepper" title="Chili pepper">chili pepper</a>)</li> <li><a href="/wiki/Incensole" title="Incensole">Incensole</a> (<a href="/wiki/Incense" title="Incense">incense</a>)</li> <li><a href="/wiki/Lysophosphatidic_acid" title="Lysophosphatidic acid">Lysophosphatidic acid</a></li> <li>Low <a href="/wiki/PH" title="PH">pH</a> (acidic conditions)</li> <li><a href="/wiki/Menthol" title="Menthol">Menthol</a> (<a href="/wiki/Mentha" title="Mentha">mint</a>)</li> <li><a href="/wiki/N-Arachidonoyl_dopamine" title="N-Arachidonoyl dopamine">N-Arachidonoyl dopamine</a></li> <li><a href="/w/index.php?title=N-Oleoyldopamine&action=edit&redlink=1" class="new" title="N-Oleoyldopamine (page does not exist)">N-Oleoyldopamine</a></li> <li><a href="/wiki/Oleoylethanolamide" title="Oleoylethanolamide">N-Oleoylethanolamide</a></li> <li><a href="/wiki/Nonivamide" title="Nonivamide">Nonivamide (PAVA)</a> (<a href="/wiki/PAVA_spray" title="PAVA spray">PAVA spray</a>)</li> <li><a href="/wiki/Nordihydrocapsaicin" title="Nordihydrocapsaicin">Nordihydrocapsaicin</a> (<a href="/wiki/Chili_pepper" title="Chili pepper">chili pepper</a>)</li> <li><a href="/wiki/Paclitaxel" title="Paclitaxel">Paclitaxel</a> (<a href="/wiki/Taxus_brevifolia" title="Taxus brevifolia">Pacific yew</a>)</li> <li><a href="/wiki/Paracetamol" title="Paracetamol">Paracetamol (acetaminophen)</a></li> <li><a href="/wiki/Phenylacetylrinvanil" title="Phenylacetylrinvanil">Phenylacetylrinvanil</a></li> <li><a href="/wiki/Phorbol_esters" title="Phorbol esters">Phorbol esters</a> (e.g., <a href="/w/index.php?title=4%CE%B1-phorbol_12,13-didecanoate&action=edit&redlink=1" class="new" title="4α-phorbol 12,13-didecanoate (page does not exist)">4α-PDD</a>)</li> <li><a href="/wiki/Piperine" title="Piperine">Piperine</a> (<a href="/wiki/Black_pepper" title="Black pepper">black pepper</a>, <a href="/wiki/Long_pepper" title="Long pepper">long pepper</a>)</li> <li><a href="/wiki/Polygodial" title="Polygodial">Polygodial</a> (<a href="/wiki/Tasmannia_stipitata" title="Tasmannia stipitata">Dorrigo pepper</a>)</li> <li><a href="/wiki/Probenecid" title="Probenecid">Probenecid</a></li> <li><a href="/wiki/Proton" title="Proton">Protons</a></li> <li><a href="/wiki/RhTx" title="RhTx">RhTx</a></li> <li><a href="/w/index.php?title=Rutamarin&action=edit&redlink=1" class="new" title="Rutamarin (page does not exist)">Rutamarin</a> (<i><a href="/wiki/Ruta_graveolens" title="Ruta graveolens">Ruta graveolens</a></i>)</li> <li><a href="/wiki/Resiniferatoxin" title="Resiniferatoxin">Resiniferatoxin</a> (RTX) (<i><a href="/wiki/Euphorbia_resinifera" title="Euphorbia resinifera">Euphorbia resinifera</a>/<a href="/wiki/Euphorbia_poissonii" title="Euphorbia poissonii">pooissonii</a></i>)</li> <li><a href="/wiki/Shogaol" title="Shogaol">Shogaols</a> (<a href="/wiki/Ginger" title="Ginger">ginger</a>, <a href="/wiki/Sichuan_pepper" title="Sichuan pepper">Sichuan</a> and <a href="/wiki/Grains_of_paradise" title="Grains of paradise">melegueta peppers</a>)</li> <li><a href="/wiki/Tetrahydrocannabivarin" title="Tetrahydrocannabivarin">Tetrahydrocannabivarin</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Thymol" title="Thymol">Thymol</a> (<a href="/wiki/Thyme" title="Thyme">thyme</a>, <a href="/wiki/Oregano" title="Oregano">oregano</a>)</li> <li><a href="/wiki/Tinyatoxin" title="Tinyatoxin">Tinyatoxin</a> (<i><a href="/wiki/Euphorbia_resinifera" title="Euphorbia resinifera">Euphorbia resinifera</a>/<a href="/wiki/Euphorbia_poissonii" title="Euphorbia poissonii">pooissonii</a></i>)</li> <li><a href="/wiki/Tramadol" title="Tramadol">Tramadol</a></li> <li><a href="/wiki/Vanillin" title="Vanillin">Vanillin</a> (<a href="/wiki/Vanilla" title="Vanilla">vanilla</a>)</li> <li><a href="/wiki/Zucapsaicin" title="Zucapsaicin">Zucapsaicin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Blockers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Spinasterol" title="Spinasterol">α-Spinasterol</a> (<i><a href="/wiki/Vernonia" title="Vernonia">Vernonia tweediana</a></i>)</li> <li><a href="/wiki/AMG-517" title="AMG-517">AMG-517</a></li> <li><a href="/wiki/AMG-9810" title="AMG-9810">AMG-9810</a></li> <li><a href="/w/index.php?title=Asivatrep&action=edit&redlink=1" class="new" title="Asivatrep (page does not exist)">Asivatrep</a></li> <li><a href="/w/index.php?title=BCTC_(drug)&action=edit&redlink=1" class="new" title="BCTC (drug) (page does not exist)">BCTC</a></li> <li><a href="/wiki/Cannabigerol" title="Cannabigerol">Cannabigerol</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cannabigerolic_acid" title="Cannabigerolic acid">Cannabigerolic acid</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cannabigerovarin" title="Cannabigerovarin">Cannabigerovarin</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Cannabinol" title="Cannabinol">Cannabinol</a> (<a href="/wiki/Cannabis" title="Cannabis">cannabis</a>)</li> <li><a href="/wiki/Capsazepine" title="Capsazepine">Capsazepine</a></li> <li><a href="/w/index.php?title=3%E2%80%B2-5-Dichlorodiphenylamine-2-carboxylic_acid&action=edit&redlink=1" class="new" title="3′-5-Dichlorodiphenylamine-2-carboxylic acid (page does not exist)">DCDPC</a></li> <li><a href="/wiki/Dehydroepiandrosterone" title="Dehydroepiandrosterone">DHEA</a></li> <li><a href="/wiki/Dehydroepiandrosterone_sulfate" title="Dehydroepiandrosterone sulfate">DHEA-S</a></li> <li><a href="/wiki/Flufenamic_acid" title="Flufenamic acid">Flufenamic acid</a></li> <li><a href="/wiki/GRC-6211" title="GRC-6211">GRC-6211</a></li> <li><a href="/wiki/HC-067047" title="HC-067047">HC-067047</a></li> <li><a href="/wiki/Lanthanum" title="Lanthanum">Lanthanum</a></li> <li><a href="/wiki/Mavatrep" title="Mavatrep">Mavatrep</a></li> <li><a href="/wiki/Meclofenamic_acid" title="Meclofenamic acid">Meclofenamic acid</a></li> <li><a href="/wiki/N-(p-Amylcinnamoyl)anthranilic_acid" title="N-(p-Amylcinnamoyl)anthranilic acid">N-(p-Amylcinnamoyl)anthranilic acid</a></li> <li><a href="/w/index.php?title=NGD-8243&action=edit&redlink=1" class="new" title="NGD-8243 (page does not exist)">NGD-8243</a></li> <li><a href="/wiki/Niflumic_acid" title="Niflumic acid">Niflumic acid</a></li> <li><a href="/wiki/Pregnenolone_sulfate" title="Pregnenolone sulfate">Pregnenolone sulfate</a></li> <li><a href="/w/index.php?title=RN-1734&action=edit&redlink=1" class="new" title="RN-1734 (page does not exist)">RN-1734</a></li> <li><a href="/wiki/RN-9893" title="RN-9893">RN-9893</a></li> <li><a href="/wiki/Ruthenium_red" title="Ruthenium red">Ruthenium red</a></li> <li><a href="/wiki/SB-366791" title="SB-366791">SB-366791</a></li> <li><a href="/wiki/SB-705498" title="SB-705498">SB-705498</a></li> <li><a href="/w/index.php?title=Tivanisiran&action=edit&redlink=1" class="new" title="Tivanisiran (page does not exist)">Tivanisiran</a></li> <li><a href="/wiki/Tolfenamic_acid" title="Tolfenamic acid">Tolfenamic acid</a></li> <li><a href="/wiki/TRPV3-74a" title="TRPV3-74a">TRPV3-74a</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><i><b>See also:</b> <a href="/wiki/Template:Receptor_modulators" title="Template:Receptor modulators">Receptor/signaling modulators</a> • <a href="/wiki/Template:Ion_channel_modulators" title="Template:Ion channel modulators">Ion channel modulators</a></i></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Umbellulone&oldid=1185142042">https://en.wikipedia.org/w/index.php?title=Umbellulone&oldid=1185142042</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Ketones" title="Category:Ketones">Ketones</a></li><li><a href="/wiki/Category:Monoterpenes" title="Category:Monoterpenes">Monoterpenes</a></li><li><a href="/wiki/Category:Cycloalkenes" title="Category:Cycloalkenes">Cycloalkenes</a></li><li><a href="/wiki/Category:Cyclopropanes" title="Category:Cyclopropanes">Cyclopropanes</a></li><li><a href="/wiki/Category:Isopropyl_compounds" title="Category:Isopropyl compounds">Isopropyl compounds</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Chemical_articles_with_multiple_compound_IDs" title="Category:Chemical articles with multiple compound IDs">Chemical articles with multiple compound IDs</a></li><li><a href="/wiki/Category:Multiple_chemicals_in_an_infobox_that_need_indexing" title="Category:Multiple chemicals in an infobox that need indexing">Multiple chemicals in an infobox that need indexing</a></li><li><a href="/wiki/Category:Chemical_articles_with_multiple_CAS_registry_numbers" title="Category:Chemical articles with multiple CAS registry numbers">Chemical articles with multiple CAS registry numbers</a></li><li><a href="/wiki/Category:Articles_without_EBI_source" title="Category:Articles without EBI source">Articles without EBI source</a></li><li><a href="/wiki/Category:Articles_without_KEGG_source" title="Category:Articles without KEGG source">Articles without KEGG source</a></li><li><a href="/wiki/Category:Articles_containing_unverified_chemical_infoboxes" title="Category:Articles containing unverified chemical infoboxes">Articles containing unverified chemical infoboxes</a></li><li><a href="/wiki/Category:Chembox_image_size_set" title="Category:Chembox image size set">Chembox image size set</a></li><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li></ul></div></div> </div> </main> </div> <div 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