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<span>SciFinder</span> </div> </a> <ul id="toc-SciFinder-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-CASSI" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#CASSI"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>CASSI</span> </div> </a> <ul id="toc-CASSI-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>History</span> </div> </a> <ul id="toc-History-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">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" 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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="Go to an article in another language. Available in 22 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-22" 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">22 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/%D8%AE%D8%AF%D9%85%D8%A9_%D8%A7%D9%84%D9%85%D8%B3%D8%AA%D8%AE%D9%84%D8%B5%D8%A7%D8%AA_%D8%A7%D9%84%D9%83%D9%8A%D9%85%D9%8A%D8%A7%D8%A6%D9%8A%D8%A9" title="خدمة المستخلصات الكيميائية – Arabic" lang="ar" hreflang="ar" data-title="خدمة المستخلصات الكيميائية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Bulgarian" lang="bg" hreflang="bg" data-title="Chemical Abstracts Service" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Catalan" lang="ca" hreflang="ca" data-title="Chemical Abstracts Service" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Danish" lang="da" hreflang="da" data-title="Chemical Abstracts Service" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – German" lang="de" hreflang="de" data-title="Chemical Abstracts Service" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Spanish" lang="es" hreflang="es" data-title="Chemical Abstracts Service" 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%AE%D8%AF%D9%85%D8%A7%D8%AA_%DA%86%DA%A9%DB%8C%D8%AF%D9%87%E2%80%8C%D9%87%D8%A7%DB%8C_%D8%B4%DB%8C%D9%85%DB%8C" title="خدمات چکیده‌های شیمی – Persian" lang="fa" hreflang="fa" data-title="خدمات چکیده‌های شیمی" 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/Chemical_Abstracts_Service" title="Chemical Abstracts Service – French" lang="fr" hreflang="fr" data-title="Chemical Abstracts Service" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Seirbh%C3%ADs_na_gCoimrithe_Ceimiceacha" title="Seirbhís na gCoimrithe Ceimiceacha – Irish" lang="ga" hreflang="ga" data-title="Seirbhís na gCoimrithe Ceimiceacha" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%BC%80%EB%AF%B8%EC%BB%AC_%EC%95%A0%EB%B8%8C%EC%8A%A4%ED%8A%B8%EB%9E%99%ED%8A%B8_%EC%84%9C%EB%B9%84%EC%8A%A4" title="케미컬 애브스트랙트 서비스 – Korean" lang="ko" hreflang="ko" data-title="케미컬 애브스트랙트 서비스" 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/SciFinder" title="SciFinder – Croatian" lang="hr" hreflang="hr" data-title="SciFinder" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Indonesian" lang="id" hreflang="id" data-title="Chemical Abstracts Service" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Italian" lang="it" hreflang="it" data-title="Chemical Abstracts Service" 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/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Hebrew" lang="he" hreflang="he" data-title="Chemical Abstracts Service" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Chemical_Abstracts" title="Chemical Abstracts – Japanese" lang="ja" hreflang="ja" data-title="Chemical Abstracts" 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-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Chemical Abstracts Service" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Polish" lang="pl" hreflang="pl" data-title="Chemical Abstracts Service" 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/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Portuguese" lang="pt" hreflang="pt" data-title="Chemical Abstracts Service" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Russian" lang="ru" hreflang="ru" data-title="Chemical Abstracts Service" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Finnish" lang="fi" hreflang="fi" data-title="Chemical Abstracts Service" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service – Ukrainian" lang="uk" hreflang="uk" data-title="Chemical Abstracts Service" 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/%E5%8C%96%E5%AD%A6%E6%96%87%E6%91%98%E7%A4%BE" title="化学文摘社 – Chinese" lang="zh" hreflang="zh" data-title="化学文摘社" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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<div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Division of the American Chemical Society</div> <p class="mw-empty-elt"> </p> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vcard"><caption class="infobox-title fn org">Chemical Abstracts Service</caption><tbody><tr><td colspan="2" class="infobox-image logo"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Chemical_Abstracts_Service_logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/2/2a/Chemical_Abstracts_Service_logo.svg/220px-Chemical_Abstracts_Service_logo.svg.png" decoding="async" width="220" height="98" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/2/2a/Chemical_Abstracts_Service_logo.svg/330px-Chemical_Abstracts_Service_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/2/2a/Chemical_Abstracts_Service_logo.svg/440px-Chemical_Abstracts_Service_logo.svg.png 2x" data-file-width="473" data-file-height="211" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.6em;">Formation</th><td class="infobox-data note">1907</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.6em;">Headquarters</th><td class="infobox-data"><a href="/wiki/Columbus,_Ohio" title="Columbus, Ohio">Columbus, Ohio</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.6em;">Location</th><td class="infobox-data label"><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>United States</li></ul></div></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.6em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Official language </div></th><td class="infobox-data">English</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.6em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">President</div></th><td class="infobox-data">Manuel Guzman</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.6em;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://www.cas.org">www<wbr />.cas<wbr />.org</a></span></td></tr></tbody></table> <p><b>Chemical Abstracts Service</b> (<b>CAS</b>) is a division of the <a href="/wiki/American_Chemical_Society" title="American Chemical Society">American Chemical Society</a>. It is a source of chemical information and is located in <a href="/wiki/Columbus,_Ohio" title="Columbus, Ohio">Columbus, Ohio</a>, <a href="/wiki/United_States" title="United States">United States</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Print_periodicals">Print periodicals</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=1" title="Edit section: Print periodicals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="infobox-journal-search" style="display:none;"></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox hproduct"><caption class="infobox-title" style="font-size:125%;"><i><span class="fn">Chemical Abstracts</span></i><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.jtitle=Chemical+Abstracts&rft.stitle=Chem.+Abstr.&rft.coden=CHABA8&rft.issn=0009-2258&rft_id=info:lccn/09004698&rft_id=info:oclcnum/1553947&rft_id=http%3A%2F%2Fwww.cas.org%2Fproducts%2Fprint%2Findex.html"></span></caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Chemical_Abstracts_(IMG_20220724_112634).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Chemical_Abstracts_%28IMG_20220724_112634%29.jpg/200px-Chemical_Abstracts_%28IMG_20220724_112634%29.jpg" decoding="async" width="200" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Chemical_Abstracts_%28IMG_20220724_112634%29.jpg/300px-Chemical_Abstracts_%28IMG_20220724_112634%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Chemical_Abstracts_%28IMG_20220724_112634%29.jpg/400px-Chemical_Abstracts_%28IMG_20220724_112634%29.jpg 2x" data-file-width="3888" data-file-height="2916" /></a></span></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Outline_of_academic_disciplines" title="Outline of academic disciplines">Discipline</a></th><td class="infobox-data category" style="text-align:left;"><a href="/wiki/Chemistry" title="Chemistry">Chemistry</a> (index)</td></tr><tr><th scope="row" class="infobox-label">Language</th><td class="infobox-data" style="text-align:left;">English</td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Publication details</th></tr><tr><th scope="row" class="infobox-label">History</th><td class="infobox-data" style="text-align:left;">1907–2010</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Academic_publishing" title="Academic publishing">Publisher</a></th><td class="infobox-data" style="text-align:left;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Chemical Abstracts Service (United States)</div></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Periodical_literature#Frequency" title="Periodical literature">Frequency</a></th><td class="infobox-data" style="text-align:left;">Weekly</td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Standard abbreviations<br /><span class="infobox-journal-search plainlinks" style="display:none;"><a rel="nofollow" class="external text" href="https://marcinwrochna.github.io/abbrevIso/?search=Chemical_Abstracts">ISO 4</a> (<a rel="nofollow" class="external text" href="http://www.issn.org/services/online-services/access-to-the-ltwa/">alt</a>) <b>·</b> <a href="/wiki/Wikipedia:WikiProject_Academic_Journals/Bluebook_journals" title="Wikipedia:WikiProject Academic Journals/Bluebook journals">Bluebook</a> (<a rel="nofollow" class="external text" href="https://westerncriminology.org/publications/bluebook-abbreviations/">alt</a>)<br /><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=0009-2258%5BISSN%5D">NLM</a> (<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=Chemical+Abstracts%5BJournal%5D">alt</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/msnhtml/serials.pdf">MathSciNet</a> (<a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet/search/journals.html?journalName=0009-2258&Submit=Search">alt</a> <span typeof="mw:File"><span title="Paid subscription required"><img alt="Paid subscription required" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png" decoding="async" width="9" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/14px-Lock-red-alt-2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/18px-Lock-red-alt-2.svg.png 2x" data-file-width="597" data-file-height="947" /></span></span>)</span></th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/ISO_4" title="ISO 4">ISO 4</a></th><td class="infobox-data identifier" style="text-align:left;"><i>Chem. Abstr.</i></td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Indexing<br /><span class="infobox-journal-search plainlinks" style="display:none;"><a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=issns&c=WIy460-R_DY&searchFor=0009-2258">CODEN</a> (<a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=issns&c=WIy460-R_DY&searchFor=">alt</a> <b>·</b> <a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=titles&c=WIy460-R_DY&searchFor=Chemical+Abstracts+Service">alt2</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/journals/00092258">JSTOR</a> (<a rel="nofollow" class="external text" href="https://www.jstor.org/action/showJournals?browseType=title">alt</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://catalog.loc.gov/vwebv/search?searchArg1=0009-2258&argType1=all&searchCode1=KNUM&searchType=2">LCCN</a> (<a rel="nofollow" class="external text" href="https://catalog.loc.gov/vwebv/search?searchArg1=Chemical+Abstracts&argType1=all&searchCode1=KTIL&searchType=2">alt</a>)<br /><a rel="nofollow" class="external text" href="http://miar.ub.edu/issn/0009-2258">MIAR</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=0009-2258%5BISSN%5D">NLM</a> (<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=Chemical+Abstracts%5BJournal%5D">alt</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://www.scopus.com/sources?sortField=citescore&sortDirection=desc&isHiddenField=false&field=issn&issn=0009-2258">Scopus</a></span></th></tr><tr><th scope="row" class="infobox-label"><span class="type"><a href="/wiki/CODEN_(identifier)" class="mw-redirect" title="CODEN (identifier)">CODEN</a></span></th><td class="infobox-data" style="text-align:left;"><a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=codens&exactMatch=y&c=WIy460-R_DY&searchFor=CHABA8">CHABA8</a></td></tr><tr><th scope="row" class="infobox-label"><span class="type"><a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a></span></th><td class="infobox-data" style="text-align:left;"><span class="value"><a rel="nofollow" class="external text" href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:0009-2258">0009-2258</a></span><br /></td></tr><tr><th scope="row" class="infobox-label"><span class="type"><a href="/wiki/LCCN_(identifier)" class="mw-redirect" title="LCCN (identifier)">LCCN</a></span></th><td class="infobox-data" style="text-align:left;"><a rel="nofollow" class="external text" href="https://lccn.loc.gov/09004698">09004698</a></td></tr><tr><th scope="row" class="infobox-label"><span class="type"><a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> no.</span></th><td class="infobox-data" style="text-align:left;"><a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/1553947">1553947</a></td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Links</th></tr><tr><td colspan="2" class="infobox-full-data" style="text-align:left;"> <ul><li><a rel="nofollow" class="external text" href="http://www.cas.org/products/print/index.html">Journal homepage</a></li></ul> </td></tr></tbody></table> <p><i><b>Chemical Abstracts</b></i> is a periodical index that provides numerous tools such as SciFinder as well as tagged keywords, summaries, indexes of disclosures, and structures of compounds in recently published scientific documents. Approximately 8,000 <a href="/wiki/Academic_journal" title="Academic journal">journals</a>, <a href="/wiki/Technical_report" title="Technical report">technical reports</a>, <a href="/wiki/Dissertation" class="mw-redirect" title="Dissertation">dissertations</a>, <a href="/wiki/Conference_proceeding" class="mw-redirect" title="Conference proceeding">conference proceedings</a>, and new <a href="/wiki/Book" title="Book">books</a>, available in at least 50 different languages, are monitored yearly, as are <a href="/wiki/Patent" title="Patent">patent</a> specifications from 27 countries and two international organizations. <i>Chemical Abstracts</i> ceased print publication on January 1, 2010.<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> </p> <div class="mw-heading mw-heading2"><h2 id="Databases">Databases</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=2" title="Edit section: Databases"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The two principal databases that support the different products are CAplus and Registry. </p> <div class="mw-heading mw-heading3"><h3 id="CAS_References">CAS References</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=3" title="Edit section: CAS References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>CAS References consists of bibliographic information and abstracts for all articles in chemical journals worldwide, and chemistry-related articles from all scientific journals, patents, and other scientific publications. </p> <div class="mw-heading mw-heading3"><h3 id="Registry">Registry</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=4" title="Edit section: Registry"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As of 2023<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Chemical_Abstracts_Service&action=edit">[update]</a></sup>, the CAS Registry contains information on more than 200 million organic and inorganic substances, and about 70 million protein and <a href="/wiki/Nucleic_acid_sequence" title="Nucleic acid sequence">nucleic acid sequences</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><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 sequence information comes from CAS and <a href="/wiki/GenBank" title="GenBank">GenBank</a>, produced by the <a href="/wiki/National_Institutes_of_Health" title="National Institutes of Health">National Institutes of Health</a>. The chemical information is produced by CAS, and is prepared by the CAS Registry System, which identifies each compound with a specific <a href="/wiki/CAS_registry_number" class="mw-redirect" title="CAS registry number">CAS registry number</a>, index name, and graphic representation of its chemical structure. </p><p>The assignment of chemical names is done according to the <a href="/wiki/Chemical_nomenclature" title="Chemical nomenclature">chemical nomenclature</a> rules for <i>CA</i> index names, which is slightly different from the internationally standard <a href="/wiki/IUPAC_nomenclature" class="mw-redirect" title="IUPAC nomenclature">IUPAC names</a>, according to the rules of <a href="/wiki/IUPAC" class="mw-redirect" title="IUPAC">IUPAC</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Products">Products</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=5" title="Edit section: Products"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>CAS databases are available via two principal database systems, STN, and SciFinder. </p> <div class="mw-heading mw-heading3"><h3 id="STN">STN</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=6" title="Edit section: STN"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:CAS_pelotonia.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/CAS_pelotonia.jpg/370px-CAS_pelotonia.jpg" decoding="async" width="370" height="278" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/CAS_pelotonia.jpg/555px-CAS_pelotonia.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/f/fc/CAS_pelotonia.jpg 2x" data-file-width="640" data-file-height="480" /></a><figcaption>Chemical Abstracts Service Building B in August 2009. Columbus, Ohio</figcaption></figure> <p>STN (Scientific & Technical Information Network) International is operated jointly<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> by CAS and <a href="/wiki/FIZ_Karlsruhe" title="FIZ Karlsruhe">FIZ Karlsruhe</a>, and is intended primarily for information professionals, using a <a href="/wiki/Command_language" title="Command language">command language</a> interface. In addition to CAS databases, STN also provides access to many other databases, similar to <a href="/wiki/Dialog_(online_database)" class="mw-redirect" title="Dialog (online database)">Dialog</a>. </p> <div class="mw-heading mw-heading3"><h3 id="SciFinder">SciFinder</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=7" title="Edit section: SciFinder"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>SciFinder is a database of chemical and bibliographic information. Originally it was available only as a <a href="/wiki/Client_(computing)" title="Client (computing)">client</a> application (for both <a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Windows</a> and <a href="/wiki/Macintosh_operating_systems" class="mw-redirect" title="Macintosh operating systems">MacOS</a> operating systems), a web version was released in 2008.<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> By that time it had a graphical interface, and was able to do graphical searches for chemical structures and reactions (the first database to allow such functions), as well as keyword searches for literature in chemistry and related disciplines.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2024)">citation needed</span></a></i>]</sup> SciFinder Scholar was a very similar a product developed for academic institutions, but discontinued in 2023.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> In 2017 the <a href="/wiki/American_Chemical_Society" title="American Chemical Society">ACS</a> released SciFinder-n as a web-only product with the same data content and improved user interface and search functions.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>SciFinder is considered as the best source of chemical information worldwide, with substantially larger number of relevant information sources than <a href="/wiki/Web_of_Science" title="Web of Science">Web of Science</a> or <a href="/wiki/Scopus" title="Scopus">Scopus</a> with <a href="/wiki/Reaxys" title="Reaxys">Reaxys</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> However, due to its unique and unusual search functions, substantial training is needed in order to fully take advantage of SciFinder capabilities.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="CASSI">CASSI</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Chemical_Abstracts_Service&action=edit&section=8" title="Edit section: CASSI"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><i>CASSI</i> stands for <i>Chemical Abstracts Service Source Index</i>. Since 2009, this formerly print and CD-ROM compilation is available as a free online resource to look up and confirm publication information. The online CASSI Search Tool provides titles and abbreviations, <a href="/wiki/CODEN" title="CODEN">CODEN</a>, <a href="/wiki/ISSN" title="ISSN">ISSN</a>, <a href="/wiki/Scientific_journal" title="Scientific journal">publisher</a>, and date of first issue (history) for a selected journal. Also included is its language of text and language of summaries.<sup id="cite_ref-cassi_11-0" class="reference"><a href="#cite_note-cassi-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>The range is from 1907 to the present, including both serial and non-serial scientific and technical publications. The database is updated quarterly.<sup id="cite_ref-cassi_11-1" class="reference"><a href="#cite_note-cassi-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> <i>Beyond CASSI</i> lists abbreviated journal titles from early chemical literature and other historical reference sources.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <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=Chemical_Abstracts_Service&action=edit&section=9" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Chemical_Abstracts_Service_complex.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Chemical_Abstracts_Service_complex.jpg/370px-Chemical_Abstracts_Service_complex.jpg" decoding="async" width="370" height="278" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Chemical_Abstracts_Service_complex.jpg/555px-Chemical_Abstracts_Service_complex.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Chemical_Abstracts_Service_complex.jpg/740px-Chemical_Abstracts_Service_complex.jpg 2x" data-file-width="4032" data-file-height="3024" /></a><figcaption>CAS Headquarters Complex, completed in 1965 with addition (on left) in 1973. Columbus, Ohio</figcaption></figure> <p><i>Chemical Abstracts</i> (<i>CA</i>) began as a volunteer effort and developed from there. The use of volunteer abstractors was phased out in 1994. <i>Chemical Abstracts</i> has been associated with the American Chemical Society in one way or another since 1907.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p><p>For many years, beginning in 1909, the offices of <i>Chemical Abstracts</i> were housed in various places on the Columbus, Ohio campus of <a href="/wiki/Ohio_State_University" title="Ohio State University">Ohio State University</a>, including McPherson Laboratory and <a href="/wiki/Watts_Hall" title="Watts Hall">Watts Hall</a>.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> In 1965, CAS moved to a new 50-acre (200,000 m<sup>2</sup>) site on the west bank of the <a href="/wiki/Olentangy_River" title="Olentangy River">Olentangy River</a>, just north of The Ohio State campus. This campus became well known in the Columbus area and famous as the site of many <a href="/wiki/Columbus_Symphony_Orchestra" title="Columbus Symphony Orchestra">Columbus Symphony Orchestra</a> pop concerts. In 2009, the campus consisted of three buildings. </p><p>In 1907, <a href="/wiki/William_A._Noyes" title="William A. Noyes">William A. Noyes</a> had enlarged the <i>Review of American Chemical Research</i>, an abstracting publication begun by <a href="/wiki/Arthur_Amos_Noyes" title="Arthur Amos Noyes">Arthur Noyes</a> in 1895 that was the forerunner of <i>Chemical Abstracts</i>. When it became evident that a separate publication containing these abstracts was needed, Noyes became the first editor of the new publication, <i>Chemical Abstracts</i>. </p><p><a href="/wiki/Evan_J._Crane" title="Evan J. Crane">E. J. Crane</a> became the first Director of Chemical Abstracts Service when it became an American Chemical Society division in 1956. Crane had been <i>CA</i> editor since 1915, and his dedication was a key factor in its long-term success. </p><p>Dale B. Baker became the CAS Director upon Crane's retirement in 1958. According to CAS, his visionary view of CAS' potential "led to expansion, modernization, and the forging of international alliances with other information organizations."<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> CAS was an early leader in the use of computer technology to organize and disseminate information.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p><p>The CAS Chemical Registry System was introduced in 1965. CAS developed a unique registry number to identify chemical substances. Agencies such as the <a href="/wiki/United_States_Environmental_Protection_Agency" title="United States Environmental Protection Agency">U.S. Environmental Protection Agency</a> and local fire departments around the world now rely on these numbers for the definite identification of substances. According to the ACS, this is the largest chemical substance database in the world. </p><p>In 1965, CAS left their offices at OSU for a new headquarters north of campus. Ground was broken in 1971 for an expansion to the building designed by architects <a href="/wiki/Brubaker/Brandt" title="Brubaker/Brandt">Brubaker/Brandt</a> to accommodate the review of 400,000 new research reports printed each year. The 5-story 142,000 square foot building opened in May 1973.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p><p>In 2007, the ACS designated its Chemical Abstracts Service subdivision an <a href="/wiki/National_Historic_Chemical_Landmarks" title="National Historic Chemical Landmarks">ACS National Historic Chemical Landmark</a> in recognition of its significance as a comprehensive repository of research in chemistry and related sciences.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>In 2021, CAS rebranded along with a change in logo. The organization updated their mission to be more focused on dynamic responsiveness due to ongoing changes within scientific industries and communities.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p><p>In 2022, CAS announced the release of almost half a million CAS registry numbers under an open license in their Common Chemistry project.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </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=Chemical_Abstracts_Service&action=edit&section=10" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col"> <ul><li><a href="/wiki/Beilstein_database" title="Beilstein database">Beilstein database</a></li> <li><a href="/wiki/Chemical_database" title="Chemical database">Chemical database</a></li> <li><a href="/wiki/ChemInform" title="ChemInform">ChemInform</a></li> <li><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a></li> <li><a href="/wiki/SPRESI_database" title="SPRESI database">SPRESI database</a></li> <li><a href="/wiki/FIZ_Karlsruhe" title="FIZ Karlsruhe">FIZ Karlsruhe</a></li> <li><a href="/wiki/Google_Scholar" title="Google Scholar">Google Scholar</a></li> <li><a href="/wiki/Inorganic_Crystal_Structure_Database" title="Inorganic Crystal Structure Database">Inorganic Crystal Structure Database</a></li> <li><a href="/wiki/List_of_academic_databases_and_search_engines" title="List of academic databases and search engines">List of academic databases and search engines</a></li> <li><a href="/wiki/List_of_chemical_databases" title="List of chemical databases">List of chemical databases</a></li> <li><a href="/wiki/List_of_open-access_journals" title="List of open-access journals">List of open-access journals</a></li> <li><a href="/wiki/List_of_scientific_journals" title="List of scientific journals">List of scientific journals</a></li> <li><a href="/wiki/PubChem" title="PubChem">PubChem</a></li></ul> </div> <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=Chemical_Abstracts_Service&action=edit&section=11" 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 reflist-columns references-column-width" style="column-width: 30em;"> <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 class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100612192259/http://cas.org/products/print/index.html">"CAS Printed Products"</a>. CAS. Archived from <a rel="nofollow" class="external text" href="http://www.cas.org/products/print/index.html">the original</a> on June 12, 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">December 2,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=CAS+Printed+Products&rft.pub=CAS&rft_id=http%3A%2F%2Fwww.cas.org%2Fproducts%2Fprint%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" 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 class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.cas.org/cas-data/cas-registry">"CAS Registry"</a>. <i>www.cas.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">February 12,</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=www.cas.org&rft.atitle=CAS+Registry&rft_id=https%3A%2F%2Fwww.cas.org%2Fcas-data%2Fcas-registry&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" 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"><a rel="nofollow" class="external text" href="https://www.reuters.com/article/pressRelease/idUS242041+08-Sep-2009+PRN20090908">50 Millionth Unique Chemical Substance Recorded in CAS REGISTRY</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090917020842/http://www.reuters.com/article/pressRelease/idUS242041+08-Sep-2009+PRN20090908">Archived</a> 2009-09-17 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, Reuters.com</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="CITEREFFIZ_Karlsruhe" class="citation web cs1">FIZ Karlsruhe. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081102211229/http://www.stn-international.com/service/about_us.html">"STN International: Home"</a>. <i>stn-international.com</i>. Archived from <a rel="nofollow" class="external text" href="http://www.stn-international.com/service/about_us.html">the original</a> on November 2, 2008<span class="reference-accessdate">. Retrieved <span class="nowrap">July 10,</span> 2008</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=stn-international.com&rft.atitle=STN+International%3A+Home&rft.au=FIZ+Karlsruhe&rft_id=http%3A%2F%2Fwww.stn-international.com%2Fservice%2Fabout_us.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" 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">"<a rel="nofollow" class="external text" href="http://www.cas.org/newsevents/releases/scifinderweb040708.html">New SciFinder Available Via the Web</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080513152556/http://www.cas.org/newsevents/releases/scifinderweb040708.html">Archived</a> 2008-05-13 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>". CAS. April 6, 2008.</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.cas.org/SCIFINDER/SCHOLAR/">SciFinder Scholar</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20061006181821/http://www.cas.org/SCIFINDER/SCHOLAR/">Archived</a> 2006-10-06 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, CAS</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</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="https://blog.lib.uiowa.edu/science/2022/09/16/scifinder-classic-is-retiring/">"SciFinder Classic is Retiring – Sciences Library News"</a>. September 16, 2022.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=SciFinder+Classic+is+Retiring+%E2%80%93+Sciences+Library+News&rft.date=2022-09-16&rft_id=https%3A%2F%2Fblog.lib.uiowa.edu%2Fscience%2F2022%2F09%2F16%2Fscifinder-classic-is-retiring%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation pressrelease cs1"><a rel="nofollow" class="external text" href="https://www.prnewswire.com/news-releases/cas-announces-scifinder-n-a-new-research-experience-that-elevates-scientific-discovery-300316096.html">"CAS announces SciFinder-n, a new research experience that elevates scientific discovery"</a> (Press release).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=CAS+announces+SciFinder-n%2C+a+new+research+experience+that+elevates+scientific+discovery&rft_id=https%3A%2F%2Fwww.prnewswire.com%2Fnews-releases%2Fcas-announces-scifinder-n-a-new-research-experience-that-elevates-scientific-discovery-300316096.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLiBurnhamLemleyBritton2010" class="citation journal cs1">Li, Jie; Burnham, Judy F.; Lemley, Trey; Britton, Robert M. (2010). "Citation Analysis: Comparison of Web of Science®, Scopus™, SciFinder®, and Google Scholar". <i>Journal of Electronic Resources in Medical Libraries</i>. <b>7</b> (3): 196–217. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F15424065.2010.505518">10.1080/15424065.2010.505518</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:62564372">62564372</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+Electronic+Resources+in+Medical+Libraries&rft.atitle=Citation+Analysis%3A+Comparison+of+Web+of+Science%C2%AE%2C+Scopus%E2%84%A2%2C+SciFinder%C2%AE%2C+and+Google+Scholar&rft.volume=7&rft.issue=3&rft.pages=196-217&rft.date=2010&rft_id=info%3Adoi%2F10.1080%2F15424065.2010.505518&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A62564372%23id-name%3DS2CID&rft.aulast=Li&rft.aufirst=Jie&rft.au=Burnham%2C+Judy+F.&rft.au=Lemley%2C+Trey&rft.au=Britton%2C+Robert+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGabrielson2018" class="citation journal cs1">Gabrielson, S. W. (2018). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6148602">"SciFinder"</a>. <i>Journal of the Medical Library Association</i>. <b>106</b> (4): 588–590. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.5195%2Fjmla.2018.515">10.5195/jmla.2018.515</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6148602">6148602</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+the+Medical+Library+Association&rft.atitle=SciFinder&rft.volume=106&rft.issue=4&rft.pages=588-590&rft.date=2018&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC6148602%23id-name%3DPMC&rft_id=info%3Adoi%2F10.5195%2Fjmla.2018.515&rft.aulast=Gabrielson&rft.aufirst=S.+W.&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC6148602&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-cassi-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-cassi_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-cassi_11-1"><sup><i><b>b</b></i></sup></a></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://cassi.cas.org/about.jsp">"About the CAS Source Index (CASSI) Search Tool"</a>. <i>Provided by Chemical Abstracts Service</i>. American Chemical Society. December 2009<span class="reference-accessdate">. Retrieved <span class="nowrap">August 26,</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Provided+by+Chemical+Abstracts+Service&rft.atitle=About+the+CAS+Source+Index+%28CASSI%29+Search+Tool&rft.date=2009-12&rft_id=http%3A%2F%2Fcassi.cas.org%2Fabout.jsp&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPeters" class="citation cs2">Peters, Marion, <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170703061922/http://www.cas.org/File%20Library/products/beyond_cassi.pdf"><i>Beyond CASSI</i></a> <span class="cs1-format">(PDF)</span>, Chemical Abstracts Service, archived from <a rel="nofollow" class="external text" href="http://www.cas.org/File%20Library/products/beyond_cassi.pdf">the original</a> <span class="cs1-format">(PDF)</span> on July 3, 2017<span class="reference-accessdate">, retrieved <span class="nowrap">August 27,</span> 2015</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Beyond+CASSI&rft.pub=Chemical+Abstracts+Service&rft.aulast=Peters&rft.aufirst=Marion&rft_id=http%3A%2F%2Fwww.cas.org%2FFile%2520Library%2Fproducts%2Fbeyond_cassi.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAmerican_Chemistry_Society._Chemical_Landmarks,_Chemical_Abstracts" class="citation web cs1">American Chemistry Society. Chemical Landmarks, Chemical Abstracts. <a rel="nofollow" class="external text" href="http://portal.acs.org/portal/acs/corg/content?_nfpb=true&_pageLabel=PP_ARTICLEMAIN&node_id=930&content_id=CTP_004593&use_sec=true&sec_url_var=region1&__uuid=6ecc043d-f9f7-4488-b4b9-ced9f9cda911">"ACS Online"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">August 1,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ACS+Online&rft.au=American+Chemistry+Society.+Chemical+Landmarks%2C+Chemical+Abstracts&rft_id=http%3A%2F%2Fportal.acs.org%2Fportal%2Facs%2Fcorg%2Fcontent%3F_nfpb%3Dtrue%26_pageLabel%3DPP_ARTICLEMAIN%26node_id%3D930%26content_id%3DCTP_004593%26use_sec%3Dtrue%26sec_url_var%3Dregion1%26__uuid%3D6ecc043d-f9f7-4488-b4b9-ced9f9cda911&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text">Chemical Abstracts Service. About CAS, CAS 100th Anniversary, CAS History: Milestones [Online]. <a rel="nofollow" class="external free" href="http://www.cas.org/aboutcas/cas100/annivhistory.html">http://www.cas.org/aboutcas/cas100/annivhistory.html</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100612193647/http://cas.org/aboutcas/cas100/annivhistory.html">Archived</a> 2010-06-12 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Accessed 8.1.2009</span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text">Chemical Abstracts Service. About CAS, CAS 100th Anniversary, CAS History: Milestones, 1958 Dale Baker [Online]. <a rel="nofollow" class="external free" href="http://www.cas.org/aboutcas/cas100/annivhistory.html">http://www.cas.org/aboutcas/cas100/annivhistory.html</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100612193647/http://cas.org/aboutcas/cas100/annivhistory.html">Archived</a> 2010-06-12 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Accessed 8.1.2009</span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text">David Flaxbart. Issues in Science and Technology Librarianship, Winter 2007. <a rel="nofollow" class="external free" href="http://www.istl.org/07-winter/viewpoints.html">http://www.istl.org/07-winter/viewpoints.html</a>. Accessed 8.01.2009</span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</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="https://login.webproxy3.columbuslibrary.org/login?qurl=https://infoweb.newsbank.com%2fapps%2fnews%2fdocument-view%3fp%3dWORLDNEWS%26t%3dfavorite%3aCOLUMBUS%21Columbus%2520Dispatch%2520Historical%2520and%2520Current%26sort%3dYMD_date%3aD%26page%3d10%26fld-base-0%3dalltext%26maxresults%3d20%26val-base-0%3d%2522Brubaker-Brandt%2522%26docref%3dimage%2fv2%3a1467499E363272B3%40EANX-NB-1627317252357A4E%402441830-16272F64F2E2C661%4040-16272F64F2E2C661%40">"CA to Dedicate New Office Building"</a>. <i>The Columbus Dispatch</i>. May 27, 1973<span class="reference-accessdate">. Retrieved <span class="nowrap">August 2,</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Columbus+Dispatch&rft.atitle=CA+to+Dedicate+New+Office+Building&rft.date=1973-05-27&rft_id=https%3A%2F%2Flogin.webproxy3.columbuslibrary.org%2Flogin%3Fqurl%3Dhttps%3A%2F%2Finfoweb.newsbank.com%252fapps%252fnews%252fdocument-view%253fp%253dWORLDNEWS%2526t%253dfavorite%253aCOLUMBUS%2521Columbus%252520Dispatch%252520Historical%252520and%252520Current%2526sort%253dYMD_date%253aD%2526page%253d10%2526fld-base-0%253dalltext%2526maxresults%253d20%2526val-base-0%253d%252522Brubaker-Brandt%252522%2526docref%253dimage%252fv2%253a1467499E363272B3%2540EANX-NB-1627317252357A4E%25402441830-16272F64F2E2C661%254040-16272F64F2E2C661%2540&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://portal.acs.org/portal/PublicWebSite/education/whatischemistry/landmarks/cas/index.htm">Chemical Abstracts Service (CAS)</a> <a rel="nofollow" class="external text" href="https://archive.today/20120712080702/http://portal.acs.org/portal/PublicWebSite/education/whatischemistry/landmarks/cas/index.htm">Archived</a> 2012-07-12 at <a href="/wiki/Archive.today" title="Archive.today">archive.today</a>, American Chemical Society.</span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</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="https://www.cas.org/resources/press-releases/cas-new-brand">"CAS launches new brand reflecting strategic evolution to empower smarter science"</a>. April 28, 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=CAS+launches+new+brand+reflecting+strategic+evolution+to+empower+smarter+science&rft.date=2021-04-28&rft_id=https%3A%2F%2Fwww.cas.org%2Fresources%2Fpress-releases%2Fcas-new-brand&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAmerican_Chemical_Society2023" class="citation web cs1">American Chemical Society (2023). <a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/">"CAS Common Chemistry"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">February 12,</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=CAS+Common+Chemistry&rft.date=2023&rft.au=American+Chemical+Society&rft_id=https%3A%2F%2Fcommonchemistry.cas.org%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AChemical+Abstracts+Service" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJacobsWilliamsHickeyPatrick2022" class="citation journal cs1">Jacobs, Andrea; Williams, Dustin; Hickey, Katherine; Patrick, Nathan; Williams, Antony J.; Chalk, Stuart; McEwen, Leah; Willighagen, Egon; Walker, Martin; Bolton, Evan; Sinclair, Gabriel; Sanford, Adam (June 13, 2022). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9199008">"CAS Common Chemistry in 2021: Expanding Access to Trusted Chemical Information for the Scientific Community"</a>. <i>Journal of Chemical Information and Modeling</i>. <b>62</b> (11): 2737–2743. <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%2Facs.jcim.2c00268">10.1021/acs.jcim.2c00268</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9199008">9199008</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/35559614">35559614</a>.</cite><span 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