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class="vector-toc-numb">2</span> <span>Anomerization</span> </div> </a> <button aria-controls="toc-Anomerization-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Anomerization subsection</span> </button> <ul id="toc-Anomerization-sublist" class="vector-toc-list"> <li id="toc-Mechanism_of_anomerization" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Mechanism_of_anomerization"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Mechanism of anomerization</span> </div> </a> <ul id="toc-Mechanism_of_anomerization-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Physical_properties_and_stability" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Physical_properties_and_stability"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Physical properties and stability</span> </div> </a> <ul id="toc-Physical_properties_and_stability-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div 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Available in 26 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-26" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">26 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D8%B5%D8%A7%D9%88%D8%BA_%D9%83%D8%B1%D8%A8%D9%88%D9%86%D9%8A%D9%84%D9%8A" title="مصاوغ كربونيلي – Arabic" lang="ar" hreflang="ar" data-title="مصاوغ كربونيلي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/An%C3%B2mer" title="Anòmer – Catalan" lang="ca" hreflang="ca" data-title="Anòmer" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Anomer" title="Anomer – Czech" lang="cs" hreflang="cs" data-title="Anomer" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Anomere" title="Anomere – German" lang="de" hreflang="de" data-title="Anomere" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Anomeer" title="Anomeer – Estonian" lang="et" hreflang="et" data-title="Anomeer" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/An%C3%B3mero" title="Anómero – Spanish" lang="es" hreflang="es" data-title="Anómero" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A2%D9%86%D9%88%D9%85%D8%B1" title="آنومر – Persian" lang="fa" hreflang="fa" data-title="آنومر" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Anom%C3%A8re" title="Anomère – French" lang="fr" hreflang="fr" data-title="Anomère" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/An%C3%B3mero" title="Anómero – Galician" lang="gl" hreflang="gl" data-title="Anómero" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%95%84%EB%85%B8%EB%A8%B8" title="아노머 – Korean" lang="ko" hreflang="ko" data-title="아노머" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Anomer" title="Anomer – Croatian" lang="hr" hreflang="hr" data-title="Anomer" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Anomeria" title="Anomeria – Italian" lang="it" hreflang="it" data-title="Anomeria" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%A0%D7%95%D7%9E%D7%A8" title="אנומר – Hebrew" lang="he" hreflang="he" data-title="אנומר" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Anomeer" title="Anomeer – Dutch" lang="nl" hreflang="nl" data-title="Anomeer" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%A2%E3%83%8E%E3%83%9E%E3%83%BC" title="アノマー – Japanese" lang="ja" hreflang="ja" data-title="アノマー" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Anomery" title="Anomery – Polish" lang="pl" hreflang="pl" data-title="Anomery" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/An%C3%B4mero" title="Anômero – Portuguese" lang="pt" hreflang="pt" data-title="Anômero" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Anomer" title="Anomer – Romanian" lang="ro" hreflang="ro" data-title="Anomer" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%90%D0%BD%D0%BE%D0%BC%D0%B5%D1%80%D1%8B" title="Аномеры – Russian" lang="ru" hreflang="ru" data-title="Аномеры" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Anom%C3%A9r" title="Anomér – Slovak" lang="sk" hreflang="sk" data-title="Anomér" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Anomer" title="Anomer – Serbian" lang="sr" hreflang="sr" data-title="Anomer" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Anomer" title="Anomer – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Anomer" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi badge-Q17559452 badge-recommendedarticle mw-list-item" title="recommended article"><a href="https://fi.wikipedia.org/wiki/Anomeeri" title="Anomeeri – Finnish" lang="fi" hreflang="fi" data-title="Anomeeri" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Anomer" title="Anomer – Turkish" lang="tr" hreflang="tr" data-title="Anomer" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%90%D0%BD%D0%BE%D0%BC%D0%B5%D1%80%D0%B8" title="Аномери – Ukrainian" lang="uk" hreflang="uk" data-title="Аномери" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%AB%AF%E5%9F%BA%E5%B7%AE%E5%90%91%E5%BC%82%E6%9E%84" title="端基差向异构 – Chinese" lang="zh" hreflang="zh" data-title="端基差向异构" 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id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><div class="cdx-message cdx-message--block cdx-message--warning mw-revision"><span class="cdx-message__icon"></span><div class="cdx-message__content"><div id="mw-revision-info-current"><p><b>This is the <a href="/wiki/Help:Page_history" title="Help:Page history">current revision</a> of this page, as edited by <span id="mw-revision-name"><a href="/w/index.php?title=User:Haeuslebauer&action=edit&redlink=1" class="new mw-userlink" title="User:Haeuslebauer (page does not exist)" data-mw-revid="1257768433"><bdi>Haeuslebauer</bdi></a> <span class="mw-usertoollinks">(<a href="/w/index.php?title=User_talk:Haeuslebauer&action=edit&redlink=1" class="new mw-usertoollinks-talk" title="User talk:Haeuslebauer (page does not exist)">talk</a> | <a href="/wiki/Special:Contributions/Haeuslebauer" class="mw-usertoollinks-contribs" 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The present address (URL) is a <a href="/wiki/Help:Permanent_link" title="Help:Permanent link">permanent link</a> to this version.</b></p><div id="revision-info-current-plain" style="display: none;">Revision as of 15:11, 16 November 2024 by <a href="/w/index.php?title=User:Haeuslebauer&action=edit&redlink=1" class="new mw-userlink" title="User:Haeuslebauer (page does not exist)" data-mw-revid="1257768433"><bdi>Haeuslebauer</bdi></a> <span class="mw-usertoollinks">(<a href="/w/index.php?title=User_talk:Haeuslebauer&action=edit&redlink=1" class="new mw-usertoollinks-talk" title="User talk:Haeuslebauer (page does not exist)">talk</a> | <a href="/wiki/Special:Contributions/Haeuslebauer" class="mw-usertoollinks-contribs" title="Special:Contributions/Haeuslebauer">contribs</a>)</span> <span class="comment">(Removing wrong information as dicussed in Talk under "absolute configurations of the anomeric carbon and the reference atom")</span></div></div><div id="mw-revision-nav">(<a 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class="mbox-text-span"><div class="multiple-issues-text mw-collapsible"><b>This article has multiple issues.</b> Please help <b><a href="/wiki/Special:EditPage/Anomer" title="Special:EditPage/Anomer">improve it</a></b> or discuss these issues on the <b><a href="/wiki/Talk:Anomer" title="Talk:Anomer">talk page</a></b>. <small><i>(<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove these messages</a>)</i></small> <div class="mw-collapsible-content"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Anomer" title="Special:EditPage/Anomer">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Anomer%22">"Anomer"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Anomer%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Anomer%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Anomer%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Anomer%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Anomer%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">August 2024</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-Lead_rewrite plainlinks metadata ambox ambox-style ambox-lead_rewrite" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">The article's <a href="/wiki/Wikipedia:Manual_of_Style/Lead_section" title="Wikipedia:Manual of Style/Lead section">lead section</a> <b>may need to be rewritten</b>.<span class="hide-when-compact"> Please help <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Anomer&action=edit">improve the lead</a> and read the <a href="/wiki/Wikipedia:Manual_of_Style/Lead_section" title="Wikipedia:Manual of Style/Lead section">lead layout guide</a>.</span> <span class="date-container"><i>(<span class="date">July 2014</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-Technical plainlinks metadata ambox ambox-style ambox-technical" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This section <b>may be too technical for most readers to understand</b>.<span class="hide-when-compact"> Please <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Anomer&action=edit">help improve it</a> to <a href="/wiki/Wikipedia:Make_technical_articles_understandable" title="Wikipedia:Make technical articles understandable">make it understandable to non-experts</a>, without removing the technical details.</span> <span class="date-container"><i>(<span class="date">May 2011</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> </div> </div><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>In <a href="/wiki/Carbohydrate_chemistry" class="mw-redirect" title="Carbohydrate chemistry">carbohydrate chemistry</a>, a pair of <b>anomers</b> (from <a href="/wiki/Greek_language" title="Greek language">Greek</a> <i> ἄνω</i> 'up, above' and <i> μέρος</i> 'part') is a pair of near-identical <a href="/wiki/Stereoisomers" class="mw-redirect" title="Stereoisomers">stereoisomers</a> or diastereomers that differ at only the <b>anomeric carbon</b>, the carbon atom that bears the <a href="/wiki/Aldehyde" title="Aldehyde">aldehyde</a> or <a href="/wiki/Ketone" title="Ketone">ketone</a> functional group in the sugar's <a href="/wiki/Open-chain" class="mw-redirect" title="Open-chain">open-chain</a> form. However, in order for anomers to exist, the sugar must be in its <a href="/wiki/Cyclic_compound" title="Cyclic compound">cyclic</a> form, since in open-chain form, the anomeric carbon atom is planar and thus <a href="/wiki/Chirality_(chemistry)" title="Chirality (chemistry)">achiral</a>. More formally stated, then, an anomer is an <a href="/wiki/Epimer" title="Epimer">epimer</a> at the <a href="/wiki/Hemiacetal" title="Hemiacetal">hemiacetal/hemiketal</a> carbon atom in a cyclic <a href="/wiki/Saccharide" class="mw-redirect" title="Saccharide">saccharide</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> <b>Anomerization</b> is the process of conversion of one anomer to the other. As is typical for stereoisomeric compounds, different anomers have different physical properties, <a href="/wiki/Melting_point" title="Melting point">melting points</a> and <a href="/wiki/Specific_rotation" title="Specific rotation">specific rotations</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Nomenclature">Nomenclature</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anomer&action=edit&section=1" title="Edit section: Nomenclature"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Alpha_glucose_views.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Alpha_glucose_views.svg/440px-Alpha_glucose_views.svg.png" decoding="async" width="440" height="132" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Alpha_glucose_views.svg/660px-Alpha_glucose_views.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/31/Alpha_glucose_views.svg/880px-Alpha_glucose_views.svg.png 2x" data-file-width="1326" data-file-height="398" /></a><figcaption>Different <a href="/wiki/Structural_formula" title="Structural formula">projections</a> of α-D-glucopyranose. <b>1</b> = Fischer projection with C-1 at the top of the anomeric centre. C-5 is the anomeric reference atom. <b>2</b>, <b>3</b> = Haworth projections. <b>4</b> = Mills projection.</figcaption></figure> <p>Every two anomers are designated alpha (α) or beta (β), according to the configurational relationship between the <i>anomeric centre</i> and the <i>anomeric reference atom</i>, hence they are relative <a href="/wiki/Cahn%E2%80%93Ingold%E2%80%93Prelog_priority_rules" title="Cahn–Ingold–Prelog priority rules">stereodescriptors</a>.<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> The anomeric centre in <a href="/wiki/Hemiacetal#Cyclic_hemiacetals_and_hemiketals" title="Hemiacetal">hemiacetals</a> is the anomeric carbon C-1; in hemiketals, it is the carbon derived from the carbonyl of the ketone (e.g. C-2 in <small>D</small>-fructose). In <a href="/wiki/Aldohexose" class="mw-redirect" title="Aldohexose">aldohexoses</a> the anomeric reference atom is the stereocenter that is farthest from the anomeric carbon in the ring (the configurational atom, defining the sugar as <small>D</small> or <small>L</small>). For example, in α-<small>D</small>-glucopyranose the reference atom is C-5. </p><p>If in the cyclic Fischer projection<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> the exocyclic oxygen atom at the anomeric centre is <a href="/wiki/Cis%E2%80%93trans_isomerism" title="Cis–trans isomerism">cis</a> (on the same side) to the exocyclic oxygen attached to the anomeric reference atom (in the OH group) the anomer is α. If the two oxygens are trans (on different sides) the anomer is β.<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> </p> <div class="mw-heading mw-heading2"><h2 id="Anomerization">Anomerization</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anomer&action=edit&section=2" title="Edit section: Anomerization"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Anomerization is the process of conversion of one anomer to the other. For <a href="/wiki/Reducing_sugar" title="Reducing sugar">reducing sugars</a>, anomerization is referred to as <i><a href="/wiki/Mutarotation" title="Mutarotation">mutarotation</a></i> and occurs readily in solution and is catalyzed by acid and base. This reversible process typically leads to an anomeric mixture in which eventually an equilibrium is reached between the two single anomers. </p><p>The <a href="/wiki/Ratio" title="Ratio">ratio</a> of the two anomers is specific for the regarding sugar. For example, regardless of the configuration of the starting <small>D</small>-glucose, a solution will gradually move towards being a mixture of approximately 64% β-<small>D</small>-glucopyranoside and 36% of α-<small>D</small>-glucopyranose. As the ratio changes, the <a href="/wiki/Optical_rotation" title="Optical rotation">optical rotation</a> of the mixture changes; this phenomenon is called <a href="/wiki/Mutarotation" title="Mutarotation">mutarotation</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Mechanism_of_anomerization">Mechanism of anomerization</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anomer&action=edit&section=3" title="Edit section: Mechanism of anomerization"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Generalmutamech.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/57/Generalmutamech.png/440px-Generalmutamech.png" decoding="async" width="440" height="299" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/57/Generalmutamech.png/660px-Generalmutamech.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/57/Generalmutamech.png/880px-Generalmutamech.png 2x" data-file-width="2096" data-file-height="1426" /></a><figcaption><a href="/wiki/Open-chain" class="mw-redirect" title="Open-chain">Open-chain</a> form as an intermediate product between α and β anomer</figcaption></figure> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:D-galactose.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/D-galactose.png/110px-D-galactose.png" decoding="async" width="110" height="214" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/D-galactose.png/165px-D-galactose.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/58/D-galactose.png/220px-D-galactose.png 2x" data-file-width="377" data-file-height="735" /></a><figcaption>Open-chain form of <small>D</small>-galactose</figcaption></figure> <p>Though the cyclic forms of sugars are usually heavily favoured, <a href="/wiki/Hemiacetal" title="Hemiacetal">hemiacetals</a> in aqueous solution are in equilibrium with their <a href="/wiki/Open-chain" class="mw-redirect" title="Open-chain">open-chain</a> forms. In aldohexoses this equilibrium is established as the <a href="/wiki/Hemiacetal" title="Hemiacetal">hemiacetal</a> bond between C-1 (the carbon bound to two oxygens) and C-5 oxygen is cleaved (forming the open-chain compound) and reformed (forming the cyclic compound). When the <a href="/wiki/Hemiacetal" title="Hemiacetal">hemiacetal</a> group is reformed, the OH group on C-5 may attack either of the two stereochemically distinct sides of the <a href="/wiki/Aldehyde" title="Aldehyde">aldehyde</a> group on C-1. Which side it attacks on determines whether the α- or β-anomer is formed. </p><p>Anomerization of glycosides typically occurs under acidic conditions. Typically, anomerization occurs through protonation of the exocyclic acetal oxygen, ionization to form an oxocarbenium ion with release of an alcohol, and nucleophilic attack by an alcohol on the reverse face of the oxocarbenium ion, followed by deprotonation. </p> <div class="mw-heading mw-heading2"><h2 id="Physical_properties_and_stability">Physical properties and stability</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anomer&action=edit&section=4" title="Edit section: Physical properties and stability"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Anomers are different in structure, and thus have different stabilizing and destabilizing effects from each other. The major contributors to the stability of a certain anomer are: </p> <ul><li>The <a href="/wiki/Anomeric_effect" title="Anomeric effect">anomeric effect</a>, which stabilizes the anomer that has an electron withdrawing group (typically an oxygen or nitrogen atom) in <a href="/wiki/Axis_of_rotation" class="mw-redirect" title="Axis of rotation">axial</a> orientation on the ring. This effect is abolished in polar solvents such as water.</li> <li><a href="/wiki/Cyclohexane_conformation#Chair_conformation" title="Cyclohexane conformation">1,3-diaxial interactions</a>, which usually destabilize the anomer that has the anomeric group in an axial orientation on the ring. This effect is especially noticeable in <a href="/wiki/Pyranose" title="Pyranose">pyranoses</a> and other six-membered ring compounds. This is a major factor in water.</li> <li><a href="/wiki/Hydrogen_bonds" class="mw-redirect" title="Hydrogen bonds">Hydrogen bonds</a> between the anomeric group and other groups on the ring, leading to stabilization of the anomer.</li> <li><a href="/wiki/Dipole" title="Dipole">Dipolar repulsion</a> between the anomeric group and other groups on the ring, leading to destabilization of the anomer.</li></ul> <p>For <small>D</small>-glucopyranoside, the β-anomer is the more stable anomer in water. For <a href="/wiki/Mannose" title="Mannose"><small>D</small>-mannopyranose</a>, the α-anomer is the more stable anomer. </p><p>Because anomers are diastereomers of each other, they often differ in physical and chemical properties. One of the most important physical properties that is used to study anomers is the <a href="/wiki/Specific_rotation" title="Specific rotation">specific rotation</a>, which can be monitored by <a href="/wiki/Polarimetry" title="Polarimetry">polarimetry</a>. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anomer&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Monosaccharide_nomenclature" title="Monosaccharide nomenclature">Monosaccharide nomenclature</a></li> <li><a href="/wiki/Stereochemistry" title="Stereochemistry">Stereochemistry</a></li></ul> <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=Anomer&action=edit&section=6" 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-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></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="CITEREFFrancis_Carey2000" class="citation book cs1">Francis Carey (2000). <i>Organic Chemistry</i> (4th ed.). McGraw-Hill Higher Education.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Organic+Chemistry&rft.edition=4th&rft.pub=McGraw-Hill+Higher+Education&rft.date=2000&rft.au=Francis+Carey&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnomer" 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"><a href="/wiki/International_Union_of_Pure_and_Applied_Chemistry" title="International Union of Pure and Applied Chemistry">IUPAC</a>, <i><a href="/wiki/IUPAC_books#Gold_Book" class="mw-redirect" title="IUPAC books">Compendium of Chemical Terminology</a></i>, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "<a rel="nofollow" class="external text" href="https://goldbook.iupac.org/terms/view/A00003.html">α (alpha), β (beta)</a>". <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1351%2Fgoldbook.A00003">10.1351/goldbook.A00003</a></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 class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.chem.qmul.ac.uk/iupac/2carb/05.html">"Chemistry - Queen Mary University of London"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Chemistry+-+Queen+Mary+University+of+London&rft_id=http%3A%2F%2Fwww.chem.qmul.ac.uk%2Fiupac%2F2carb%2F05.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnomer" 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"><a rel="nofollow" class="external text" href="http://www.chem.qmul.ac.uk/iupac/2carb/06n07.html">Nomenclature of Carbohydrates (Recommendations 1996)</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20101027084526/http://www.chem.qmul.ac.uk/iupac/2carb/06n07.html">Archived</a> 2010-10-27 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>  <a rel="nofollow" class="external text" href="http://www.iupac.org/publications/pac/1996/pdf/6810x1919.pdf">PDF</a></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anomer&action=edit&section=7" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Anomer" class="extiw" title="commons:Category:Anomer">Anomer</a> at Wikimedia 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style="width:1%">General</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/Aldose" title="Aldose">Aldose</a></li> <li><a href="/wiki/Ketose" title="Ketose">Ketose</a></li> <li><a href="/wiki/Furanose" title="Furanose">Furanose</a></li> <li><a href="/wiki/Pyranose" title="Pyranose">Pyranose</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Geometry</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 class="mw-selflink selflink">Anomer</a></li> <li><a href="/wiki/Cyclohexane_conformation" title="Cyclohexane conformation">Cyclohexane conformation</a></li> <li><a href="/wiki/Epimer" title="Epimer">Epimer</a></li> <li><a href="/wiki/Mutarotation" title="Mutarotation">Mutarotation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Monosaccharide" title="Monosaccharide">Monosaccharides</a></th><td class="navbox-list-with-group navbox-list navbox-odd" 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/Diose" title="Diose">Dioses</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>Aldodiose <ul><li><a href="/wiki/Glycolaldehyde" title="Glycolaldehyde">Glycolaldehyde</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Triose" title="Triose">Trioses</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>Aldotriose <ul><li><a href="/wiki/Glyceraldehyde" title="Glyceraldehyde">Glyceraldehyde</a></li></ul></li> <li>Ketotriose <ul><li><a href="/wiki/Dihydroxyacetone" title="Dihydroxyacetone">Dihydroxyacetone</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tetrose" title="Tetrose">Tetroses</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>Aldotetroses <ul><li><a href="/wiki/Erythrose" title="Erythrose">Erythrose</a></li> <li><a href="/wiki/Threose" title="Threose">Threose</a></li></ul></li> <li>Ketotetrose <ul><li><a href="/wiki/Erythrulose" title="Erythrulose">Erythrulose</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Pentose" title="Pentose">Pentoses</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>Aldopentoses <ul><li><a href="/wiki/Arabinose" title="Arabinose">Arabinose</a></li> <li><a href="/wiki/Lyxose" title="Lyxose">Lyxose</a></li> <li><a href="/wiki/Ribose" title="Ribose">Ribose</a></li> <li><a href="/wiki/Xylose" title="Xylose">Xylose</a></li></ul></li> <li>Ketopentoses <ul><li><a href="/wiki/Ribulose" title="Ribulose">Ribulose</a></li> <li><a href="/wiki/Xylulose" title="Xylulose">Xylulose</a></li></ul></li> <li><a href="/wiki/Deoxy_sugar" title="Deoxy sugar">Deoxy sugars</a> <ul><li><a href="/wiki/Deoxyribose" title="Deoxyribose">Deoxyribose</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hexose" title="Hexose">Hexoses</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/Aldohexose" class="mw-redirect" title="Aldohexose">Aldohexoses</a> <ul><li><a href="/wiki/Allose" title="Allose">Allose</a></li> <li><a href="/wiki/Altrose" title="Altrose">Altrose</a></li> <li><a href="/wiki/Galactose" title="Galactose">Galactose</a></li> <li><a href="/wiki/Glucose" title="Glucose">Glucose</a></li> <li><a href="/wiki/Gulose" title="Gulose">Gulose</a></li> <li><a href="/wiki/Idose" title="Idose">Idose</a></li> <li><a href="/wiki/Mannose" title="Mannose">Mannose</a></li> <li><a href="/wiki/Talose" title="Talose">Talose</a></li></ul></li> <li><a href="/wiki/Ketohexose" class="mw-redirect" title="Ketohexose">Ketohexoses</a> <ul><li><a href="/wiki/Fructose" title="Fructose">Fructose</a></li> <li><a href="/wiki/Psicose" title="Psicose">Psicose</a></li> <li><a href="/wiki/Sorbose" title="Sorbose">Sorbose</a></li> <li><a href="/wiki/Tagatose" title="Tagatose">Tagatose</a></li></ul></li> <li>Deoxy sugars <ul><li><a href="/wiki/Fucose" title="Fucose">Fucose</a></li> <li><a href="/wiki/Fuculose" title="Fuculose">Fuculose</a></li> <li><a href="/wiki/Rhamnose" title="Rhamnose">Rhamnose</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Heptose" title="Heptose">Heptoses</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>Ketoheptoses <ul><li><a href="/wiki/Mannoheptulose" title="Mannoheptulose">Mannoheptulose</a></li> <li><a href="/wiki/Sedoheptulose" title="Sedoheptulose">Sedoheptulose</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Above 7</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/Octose" title="Octose">Octoses</a></li> <li><a href="/wiki/Nonose" title="Nonose">Nonoses</a> <ul><li><a href="/wiki/Neuraminic_acid" title="Neuraminic acid">Neuraminic 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%">Multiple</th><td class="navbox-list-with-group navbox-list navbox-odd" 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/Disaccharide" title="Disaccharide">Disaccharides</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/Cellobiose" title="Cellobiose">Cellobiose</a></li> <li><a href="/wiki/Isomaltose" title="Isomaltose">Isomaltose</a></li> <li><a href="/wiki/Isomaltulose" title="Isomaltulose">Isomaltulose</a></li> <li><a href="/wiki/Lactose" title="Lactose">Lactose</a></li> <li><a href="/wiki/Lactulose" title="Lactulose">Lactulose</a></li> <li><a href="/wiki/Maltose" title="Maltose">Maltose</a></li> <li><a href="/wiki/Sucrose" title="Sucrose">Sucrose</a></li> <li><a href="/wiki/Trehalose" title="Trehalose">Trehalose</a></li> <li><a href="/wiki/Turanose" title="Turanose">Turanose</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Trisaccharide" title="Trisaccharide">Trisaccharides</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/Maltotriose" title="Maltotriose">Maltotriose</a></li> <li><a href="/wiki/Melezitose" title="Melezitose">Melezitose</a></li> <li><a href="/wiki/Raffinose" title="Raffinose">Raffinose</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tetrasaccharide" title="Tetrasaccharide">Tetrasaccharides</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/Stachyose" title="Stachyose">Stachyose</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other<br /> <a href="/wiki/Oligosaccharide" title="Oligosaccharide">oligosaccharides</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/Acarbose" title="Acarbose">Acarbose</a></li> <li><a href="/wiki/Fructooligosaccharide" title="Fructooligosaccharide">Fructooligosaccharide</a> (FOS)</li> <li><a href="/wiki/Galactooligosaccharide" title="Galactooligosaccharide">Galactooligosaccharide</a> (GOS)</li> <li><a href="/wiki/Isomaltooligosaccharide" title="Isomaltooligosaccharide">Isomaltooligosaccharide</a> (IMO)</li> <li><a href="/wiki/Maltodextrin" title="Maltodextrin">Maltodextrin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Polysaccharide" title="Polysaccharide">Polysaccharides</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/Beta-glucan" title="Beta-glucan">Beta-glucan</a> <ul><li><a href="/wiki/Oat_beta-glucan" title="Oat beta-glucan">Oat beta-glucan</a></li> <li><a href="/wiki/Lentinan" title="Lentinan">Lentinan</a></li> <li><a href="/wiki/Schizophyllan" title="Schizophyllan">Sizofiran</a></li> <li><a href="/wiki/Zymosan" title="Zymosan">Zymosan</a></li> <li><a href="/wiki/Cellulose" title="Cellulose">Cellulose</a></li> <li><a href="/wiki/Chitin" title="Chitin">Chitin</a></li></ul></li> <li><a href="/wiki/Chitosan" title="Chitosan">Chitosan</a></li> <li><a href="/wiki/Dextrin" title="Dextrin">Dextrin</a> / <a href="/wiki/Dextran" title="Dextran">Dextran</a></li> <li><i><a href="/wiki/Fructose" title="Fructose">Fructose</a> / <a href="/wiki/Fructan" title="Fructan">Fructan</a></i> <ul><li><a href="/wiki/Inulin" title="Inulin">Inulin</a></li></ul></li> <li><i><a href="/wiki/Galactose" title="Galactose">Galactose</a> / <a href="/wiki/Galactose" title="Galactose">Galactan</a></i></li> <li><i><a href="/wiki/Glucose" title="Glucose">Glucose</a> / <a href="/wiki/Glucan" title="Glucan">Glucan</a></i> <ul><li><a href="/wiki/Glycogen" title="Glycogen">Glycogen</a></li></ul></li> <li><a href="/wiki/Hemicellulose" title="Hemicellulose">Hemicellulose</a></li> <li><a href="/wiki/Levan_polysaccharide" title="Levan polysaccharide">Levan beta 2→6</a></li> <li><a href="/wiki/Lignin" title="Lignin">Lignin</a></li> <li><a href="/wiki/Mannans" title="Mannans">Mannan</a></li> <li><a href="/wiki/Pectin" title="Pectin">Pectin</a></li> <li><a href="/wiki/Starch" title="Starch">Starch</a> <ul><li><a href="/wiki/Amylopectin" title="Amylopectin">Amylopectin</a></li> <li><a href="/wiki/Amylose" title="Amylose">Amylose</a></li></ul></li> <li><a href="/wiki/Xanthan_gum" title="Xanthan gum">Xanthan gum</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" 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