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href=\"/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%98%D0%B0:%D0%A2%D0%B0%D0%BA%D0%BC%D0%B8%D1%87%D0%B5%D1%9A%D0%B5_%D1%83_%D0%BF%D0%B8%D1%81%D0%B0%D1%9A%D1%83_%D1%87%D0%BB%D0%B0%D0%BD%D0%B0%D0%BA%D0%B0/%D0%A3_%D1%81%D0%B2%D0%B5%D1%82%D1%83_%D0%A4%D0%BB%D0%BE%D1%80%D0%B5_%D0%B8_%D0%A4%D0%B0%D1%83%D0%BD%D0%B5\" title=\"Википедија:Такмичење у писању чланака/У свету Флоре и Фауне\"\u003EФлоре и фауне\u003C/a\u003E\u003C/b\u003E.\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\n\u003Cdiv class=\"noticebanner\"\u003E\u003Cdiv class=\"plainlinks\" style=\"background-color: #FBEBEA; border-radius:5px; margin-top:10px; position:relative; border: 1px solid #aaa; font-family: \u0026#39;Helvetica\u0026#39;, \u0026#39;Arial\u0026#39;, sans-serif; line-height: 18px; box-shadow: 0 1px 1px rgba( 0, 0, 0, 0.15 ); overflow:hidden;\"\u003E\u003Cdiv style=\"display:block; top:4px; width:100%; text-align:center;;\"\u003E\u003Cdiv style=\"color:#000085; font-size:25px; line-height:25px\"\u003E\u003Cdiv style=\"padding-left:50px;\"\u003E\u003C/div\u003E\u003C/div\u003E\u003Cdiv style=\"padding-top:2px; color:#444; font-size:1.15em; line-height:1.5;\"\u003E\u003Cdiv style=\"padding-left:8px; padding-right:8px;\"\u003EПридружите се \u003Cb\u003E\u003Ca href=\"/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%98%D0%B0:%D0%A3%D1%80%D0%B5%D1%92%D0%B8%D0%B2%D0%B0%D1%87%D0%BA%D0%B8_%D0%BC%D0%B0%D1%80%D0%B0%D1%82%D0%BE%D0%BD_%D0%92%D0%B8%D0%BA%D0%B8_%D0%B2%D0%BE%D0%BB%D0%B8_%D1%98%D0%B0%D0%B2%D0%BD%D1%83_%D1%83%D0%BC%D0%B5%D1%82%D0%BD%D0%BE%D1%81%D1%82_%D0%B8_%D0%B3%D1%80%D0%BE%D0%B1%D0%BD%D0%B0_%D0%BE%D0%B1%D0%B5%D0%BB%D0%B5%D0%B6%D1%98%D0%B0_2024.\" title=\"Википедија:Уређивачки маратон Вики воли јавну уметност и гробна обележја 2024.\"\u003EУређивачком маратону Вики воли јавну уметност и гробна обележја 2024\u003C/a\u003E\u003C/b\u003E.\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\n\u003Cdiv class=\"noticebanner\"\u003E\u003Cdiv class=\"plainlinks\" style=\"background-color: #FBEBEA; border-radius:5px; margin-top:10px; position:relative; border: 1px solid #aaa; font-family: \u0026#39;Helvetica\u0026#39;, \u0026#39;Arial\u0026#39;, sans-serif; line-height: 18px; box-shadow: 0 1px 1px rgba( 0, 0, 0, 0.15 ); overflow:hidden;\"\u003E\u003Cdiv style=\"display:block; top:4px; width:100%; text-align:center;;\"\u003E\u003Cdiv style=\"color:#000085; font-size:25px; line-height:25px\"\u003E\u003Cdiv style=\"padding-left:50px;\"\u003E\u003C/div\u003E\u003C/div\u003E\u003Cdiv style=\"padding-top:2px; color:#444; font-size:1.15em; line-height:1.5;\"\u003E\u003Cdiv style=\"padding-left:8px; padding-right:8px;\"\u003EУчествујте у \u003Cb\u003E\u003Ca href=\"https://sr.wikiquote.org/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D1%86%D0%B8%D1%82%D0%B0%D1%82:%D0%9A%D0%B0%D0%BC%D0%BF%D0%B0%D1%9A%D0%B0_SheSaid_2024\" class=\"extiw\" title=\"q:Викицитат:Кампања SheSaid 2024\"\u003Eкампањи писања цитата значајних жена\u003C/a\u003E\u003C/b\u003E на Викицитату.\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\n\u003Cdiv class=\"noticebanner\"\u003E\u003Cdiv class=\"plainlinks\" style=\"background-color: #FBEBEA; border-radius:5px; margin-top:10px; position:relative; border: 1px solid #aaa; font-family: \u0026#39;Helvetica\u0026#39;, \u0026#39;Arial\u0026#39;, sans-serif; line-height: 18px; box-shadow: 0 1px 1px rgba( 0, 0, 0, 0.15 ); overflow:hidden;\"\u003E\u003Cdiv style=\"display:block; top:4px; width:100%; text-align:center;;\"\u003E\u003Cdiv style=\"color:#000085; font-size:25px; line-height:25px\"\u003E\u003Cdiv style=\"padding-left:50px;\"\u003E\u003C/div\u003E\u003C/div\u003E\u003Cdiv style=\"padding-top:2px; color:#444; font-size:1.15em; line-height:1.5;\"\u003E\u003Cdiv style=\"padding-left:8px; padding-right:8px;\"\u003EПридружите се \u003Cb\u003E\u003Ca href=\"/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%98%D0%B0:%D0%90%D0%BA%D1%86%D0%B8%D1%98%D0%B0_%D0%BF%D1%80%D0%BE%D1%88%D0%B8%D1%80%D0%B8%D0%B2%D0%B0%D1%9A%D0%B0_%D0%BA%D0%BB%D0%B8%D1%86%D0%B0\" title=\"Википедија:Акција проширивања клица\"\u003Eакцији проширивања клица\u003C/a\u003E\u003C/b\u003E.\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E";}}());</script></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Сајт"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Садржај" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Садржај</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">помери на страну</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">сакриј</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Почетак</div> </a> </li> <li id="toc-Vidi_još" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vidi_još"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Vidi još</span> </div> </a> <ul id="toc-Vidi_još-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Reference" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Reference"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Reference</span> </div> </a> <ul id="toc-Reference-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Spoljašnje_veze" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Spoljašnje_veze"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Spoljašnje veze</span> </div> </a> <ul id="toc-Spoljašnje_veze-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Садржај" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Прикажи/сакриј садржај" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Прикажи/сакриј садржај</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Polarna površina molekula</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Чланак на другим језицима. 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class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Polar_surface_area" title="Polar surface area — енглески" lang="en" hreflang="en" data-title="Polar surface area" data-language-autonym="English" data-language-local-name="енглески" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%A5%B5%E6%80%A7%E8%A1%A8%E9%9D%A2%E7%A9%8D" title="極性表面積 — јапански" lang="ja" hreflang="ja" data-title="極性表面積" data-language-autonym="日本語" data-language-local-name="јапански" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Polarna_povr%C5%A1ina_molekula" title="Polarna površina molekula — српскохрватски" lang="sh" hreflang="sh" data-title="Polarna površina molekula" data-language-autonym="Srpskohrvatski / српскохрватски" 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class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Алатке странице"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Изглед"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Изглед</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">помери на страну</button> <button 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srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Polar-surface-area.png/525px-Polar-surface-area.png 1.5x, //upload.wikimedia.org/wikipedia/commons/7/7e/Polar-surface-area.png 2x" data-file-width="541" data-file-height="358" /></a><figcaption>Polarna površina <a href="/wiki/Paracetamol" title="Paracetamol">paracetamola</a> (crveno)</figcaption></figure> <p><b>Polarna površina molekula</b> (<a href="/wiki/%D0%95%D0%BD%D0%B3%D0%BB%D0%B5%D1%81%D0%BA%D0%B8_%D1%98%D0%B5%D0%B7%D0%B8%D0%BA" title="Енглески језик">engl.</a> <span lang="en"><i><i><span lang="en" title="енглески текст">Polar Surface Area</span></i></i></span> - <i>PSA</i>) definiše se kao suma površina svih polarnih atoma, prvenstveno <a href="/wiki/%D0%9A%D0%B8%D1%81%D0%B5%D0%BE%D0%BD%D0%B8%D0%BA" title="Кисеоник">kiseonika</a> i <a href="/wiki/%D0%90%D0%B7%D0%BE%D1%82" title="Азот">azota</a>, uključujući atome vodonika koji su vezani za njih.<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><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>PSA nalazi široku primenu u <a href="/wiki/Medicinska_hemija" title="Medicinska hemija">medicinskoj hemiji</a>, kao parametar za optimizaciju sposobnosti leka da prodre u ćelije. Molekuli sa polarnom površinom većom od 140 <a href="/wiki/%D0%90%D0%BD%D0%B3%D1%81%D1%82%D1%80%D0%B5%D0%BC_(%D1%98%D0%B5%D0%B4%D0%B8%D0%BD%D0%B8%D1%86%D0%B0)" title="Ангстрем (јединица)">angstroma</a> kvadratnih ulavnom ispoljavaju slabu permeabilnost ćelijskih membrana. Da bi molekuli prošli kroz <a href="/wiki/%D0%9A%D1%80%D0%B2%D0%BD%D0%BE-%D0%BC%D0%BE%D0%B6%D0%B4%D0%B0%D0%BD%D0%B0_%D0%B1%D0%B0%D1%80%D0%B8%D1%98%D0%B5%D1%80%D0%B0" title="Крвно-мождана баријера">krvno-moždanu barijeru</a> (i delovali na receptorima <a href="/wiki/%D0%A6%D0%B5%D0%BD%D1%82%D1%80%D0%B0%D0%BB%D0%BD%D0%B8_%D0%BD%D0%B5%D1%80%D0%B2%D0%BD%D0%B8_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC" title="Централни нервни систем">centralnog nervnog sistema</a>), obično je neophodno da imaju PSA manju od 60 angstroma kvadratnih. </p> <div class="mw-heading mw-heading2"><h2 id="Vidi_još"><span id="Vidi_jo.C5.A1"></span>Vidi još</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Polarna_povr%C5%A1ina_molekula&veaction=edit&section=1" title="Уредите одељак „Vidi još”" class="mw-editsection-visualeditor"><span>уреди</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Polarna_povr%C5%A1ina_molekula&action=edit&section=1" title="Уреди извор одељка: Vidi još"><span>уреди извор</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/w/index.php?title=Lipinskijevo_pravilo_petice&action=edit&redlink=1" class="new" title="Lipinskijevo pravilo petice (страница не постоји)">Lipinskijevo pravilo petice</a></li> <li><a href="/w/index.php?title=Biofarmaceutski_klasifikacioni_sistem&action=edit&redlink=1" class="new" title="Biofarmaceutski klasifikacioni sistem (страница не постоји)">Biofarmaceutski klasifikacioni sistem</a></li> <li><a href="/wiki/Heminformatika" title="Heminformatika">Heminformatika</a> <ul><li><i><a href="/w/index.php?title=Chemistry_Development_Kit&action=edit&redlink=1" class="new" title="Chemistry Development Kit (страница не постоји)">Chemistry Development Kit</a></i></li> <li><i><a href="/w/index.php?title=JOELib&action=edit&redlink=1" class="new" title="JOELib (страница не постоји)">JOELib</a></i></li></ul></li></ul> <div class="mw-heading mw-heading2"><h2 id="Reference">Reference</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Polarna_povr%C5%A1ina_molekula&veaction=edit&section=2" title="Уредите одељак „Reference”" class="mw-editsection-visualeditor"><span>уреди</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Polarna_povr%C5%A1ina_molekula&action=edit&section=2" title="Уреди извор одељка: Reference"><span>уреди извор</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r28440201">.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">Ertl, P., Rohde, B., Selzer, P. Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties. <i><a href="/wiki/Journal_of_Medicinal_Chemistry" title="Journal of Medicinal Chemistry">J. Med. Chem.</a></i> <b>2000</b>, <i>43</i>, 3714–3717. (<cite class="citation journal">. <a href="/wiki/Digitalni_identifikator_objekta" title="Digitalni identifikator objekta">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Fjm000942e">10.1021/jm000942e</a>.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fsr.wikipedia.org%3APolarna+povr%C5%A1ina+molekula&rft.genre=article&rft_id=info%3Adoi%2F10.1021%2Fjm000942e&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span> <span style="font-size:100%" class="error citation-comment">Недостаје или је празан параметар <code style="color:inherit; border:inherit; padding:inherit;">|title=</code> (<a href="/wiki/%D0%9F%D0%BE%D0%BC%D0%BE%D1%9B:CS1_%D0%B3%D1%80%D0%B5%D1%88%D0%BA%D0%B5#citation_missing_title" title="Помоћ:CS1 грешке">помоћ</a>)</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">Ertl, P. <a rel="nofollow" class="external text" href="http://books.google.com/books?id=wEsxCtyUJUEC&printsec=frontcover&cad=0#PPA111,M1">Polar Surface Area</a><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%98%D0%B0:%D0%9C%D1%80%D1%82%D0%B2%D0%B0_%D0%B2%D0%B5%D0%B7%D0%B0" title="Википедија:Мртва веза"><span title="">мртва веза</span></a></i>]</span></sup>, in <i>Molecular Drug Properties</i>, R. Mannhold (ed), Wiley-VCH, pp. 111–126, <b>2007</b></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Spoljašnje_veze"><span id="Spolja.C5.A1nje_veze"></span>Spoljašnje veze</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Polarna_povr%C5%A1ina_molekula&veaction=edit&section=3" title="Уредите одељак „Spoljašnje veze”" class="mw-editsection-visualeditor"><span>уреди</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Polarna_povr%C5%A1ina_molekula&action=edit&section=3" title="Уреди извор одељка: Spoljašnje veze"><span>уреди извор</span></a><span class="mw-editsection-bracket">]</span></span></div> <div role="navigation" aria-label="Portals" class="noprint portal plainlist tright" style="margin:0.5em 0 0.5em 1em;border:solid #aaa 1px"> <ul style="display:table;box-sizing:border-box;padding:0.1em;max-width:175px;background:#f9f9f9;font-size:85%;line-height:110%;font-style:italic;font-weight:bold"> <li style="display:table-row"><span style="display:table-cell;padding:0.2em;vertical-align:middle;text-align:center"><span class="noviewer" typeof="mw:File"><a href="/wiki/%D0%94%D0%B0%D1%82%D0%BE%D1%82%D0%B5%D0%BA%D0%B0:P_chemistry.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/P_chemistry.svg/31px-P_chemistry.svg.png" decoding="async" width="31" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/P_chemistry.svg/47px-P_chemistry.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ca/P_chemistry.svg/62px-P_chemistry.svg.png 2x" data-file-width="400" data-file-height="360" /></a></span></span><span style="display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle"><a href="/wiki/%D0%9F%D0%BE%D1%80%D1%82%D0%B0%D0%BB:%D0%A5%D0%B5%D0%BC%D0%B8%D1%98%D0%B0" title="Портал:Хемија">Portal Hemija </a></span></li></ul></div> <ul><li><a rel="nofollow" class="external text" href="http://www.molinspiration.com/cgi-bin/properties">Interactive Polar Surface Area calculator</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20201218050318/http://www.molinspiration.com/cgi-bin/properties">Архивирано</a> на сајту <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> (18. децембар 2020)</li> <li><a rel="nofollow" class="external text" href="http://depth-first.com/articles/2007/09/19/easily-calculate-tpsa-descriptors-from-smiles-strings-using-ruby-cdk/">Free, Programmable TPSA Calculator</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; 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