Micron Document
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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Chemical Abstracts Service</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Der <b>Chemical Abstracts Service</b> (<b>CAS</b>) ist eine 1907 gegründete Unterabteilung der <a href="American_Chemical_Society" title="American Chemical Society">American Chemical Society</a> mit Sitz in <a href="Columbus_(Ohio)" title="Columbus (Ohio)">Columbus</a>, <a href="Ohio" title="Ohio">Ohio</a>. Sein Publikationsorgan Chemical Abstracts (CA) hat zum Ziel, weltweit sämtliche <a href="Chemie" title="Chemie">Chemie</a>-relevanten Veröffentlichungen zu indizieren und zusammenzufassen, für die Chemical Abstracts werden rund 10.000 Zeitschriften (Stand 2010), Bücher in etwa 50 Sprachen, <a href="Dissertation" title="Dissertation">Dissertationen</a>, Tagungsberichte und <a href="Patent" title="Patent">Patente</a> von 27 Landesorganisationen und zwei internationalen Organisationen ausgewertet. Die von CAS angebotenen Dienstleistungen und Produkte sind überwiegend kommerziell und kostenpflichtig. Von Bedeutung für den recherchierenden Zugang zu den CAS- (und weiteren) Fach- und Patentdatenbanken ist <a href="STN_(Datenbank)" title="STN (Datenbank)">STN</a> (The Scientific &amp; Technical Information Network).
</p>

<div class="mw-heading mw-heading2"><h2 id="Datenbanken">Datenbanken</h2></div>
<table class="wikitable float-right" style="text-align:center">
<tbody><tr>
<th>Zeitpunkt
</th>
<th>Anzahl registrierter Verbindungen<style data-mw-deduplicate="TemplateStyles:r261937660">
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</style>&nbsp;<span class="fussnoten-etui reference"><sup class="fussnoten-marke" data-annotationpair-m="Anm.">Anm.</sup></span>
</th>
<th>Quelle
</th></tr>
<tr>
<td>1990
</td>
<td>10 Millionen
</td>
<td><sup id="cite_ref-Hübner_1-0" class="reference"><a href="#cite_note-Hübner-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>2000
</td>
<td>22 Millionen
</td>
<td><sup id="cite_ref-Hübner_1-1" class="reference"><a href="#cite_note-Hübner-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>21. November 2008
</td>
<td>40 Millionen
</td>
<td><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>
</td></tr>
<tr>
<td>7. September 2009
</td>
<td>50 Millionen
</td>
<td><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>
</td></tr>
<tr>
<td>24. Mai 2011
</td>
<td>60 Millionen
</td>
<td><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>
</td></tr>
<tr>
<td>6. Dezember 2012
</td>
<td>70 Millionen
</td>
<td><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>
</td></tr>
<tr>
<td>29. Juni 2015
</td>
<td>100 Millionen
</td>
<td><sup id="cite_ref-100Mill_6-0" class="reference"><a href="#cite_note-100Mill-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>Dezember 2017
</td>
<td>&gt; 135 Millionen
</td>
<td><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>
</td></tr>
<tr>
<td>März 2021
</td>
<td>183 Millionen
</td>
<td><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>
</td></tr>
<tr>
<td>Mai 2024
</td>
<td>219 Millionen
</td>
<td><sup id="cite_ref-Content_9-0" class="reference"><a href="#cite_note-Content-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>November 2025
</td>
<td>279 Millionen
</td>
<td><sup id="cite_ref-CAS-Data_10-0" class="reference"><a href="#cite_note-CAS-Data-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td colspan="3"><div class="fussnoten-block"><div class="fussnoten-inhalt references"><sup class="fussnoten-marke mw-cite-backlink" data-annotationpair-a="Anm.">Anm.</sup>&nbsp;<div class="reference-text"><small>Organische und anorganische Verbindungen, ohne Proteinsequenzen</small></div></div></div>
</td></tr></tbody></table>
<p>Der CAS ist am bekanntesten für seine großen <a href="Datenbank" title="Datenbank">Datenbanken</a>.
</p>
<ul><li>Für <a href="Chemische_Verbindung" title="Chemische Verbindung">chemischen Verbindungen</a> das CAS-Registry<sup id="cite_ref-REG_11-0" class="reference"><a href="#cite_note-REG-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> das einen eindeutigen Schlüssel, die <i>CAS Registry Number</i>, auf Deutsch meist <a href="CAS-Nummer" title="CAS-Nummer">CAS-Nummer</a> genannt vergibt. 2021 wurden rund 185 Millionen registrierte <a href="Organische_Chemie" title="Organische Chemie">organische</a> und <a href="Anorganische_Chemie" title="Anorganische Chemie">anorganische</a> Substanzen erreicht.<sup id="cite_ref-REG_11-1" class="reference"><a href="#cite_note-REG-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></li>
<li>CAS-Reactions</li>
<li>CAS References</li>
<li>CAS Patents</li>
<li>CAS Commercial Sources</li>
<li>CAS Common Chemistry, in der rund 500.000 Verbindungen kostenfrei gesucht werden können, allerdings mit stark eingeschränkter Größe des angezeigten Datensatzes.<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></li></ul>
<ul><li>CASSI (CAS Source Index) reguliert, wie Zeitschriftentitel für die Nennung in Literaturnachweisen abgekürzt werden.<sup id="cite_ref-CASSIST_13-0" class="reference"><a href="#cite_note-CASSIST-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Das ‚CASSI Search Tool‘ automatisiert den Vorgang in beide Richtungen.<sup id="cite_ref-CASSIST_13-1" class="reference"><a href="#cite_note-CASSIST-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Aus einer Abkürzung kann der Fachzeitschriftentitel erzeugt werden und umgekehrt.<sup id="cite_ref-CASSIST_13-2" class="reference"><a href="#cite_note-CASSIST-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Außerdem kann über das Formular zu CODEN, ISBN u. ISSN der entsprechende Zeitschriften-/Buchtitel gefunden werden.</li></ul>
<p>Da nichtenglische Artikel ins Englische indexiert werden, kann es je nach Sprache und Transkriptionssystem zu Problemen mit der Rückführbarkeit, speziell bei Personennamen kommen. Dies Problem tritt speziell bei Titeln aus asiatischen und afrikanischen Sprachen auf, die in ungängigen Sprachen oder Schriften verfasst sind.
</p>
<div class="mw-heading mw-heading2"><h2 id="Software">Software</h2></div>
<p>CAS gibt das kommerzielle Computerprogramm <a href="SciFinder" title="SciFinder">SciFinder</a> zum Durchsuchen der Datenbanken heraus. Der <i>SciFinder Scholar</i> ist eine in den Suchmöglichkeiten eingeschränkte Version, die häufig an Universitäten eingesetzt wird. Beide bieten eine graphische Benutzeroberfläche, die es ermöglicht, nach chemischen Strukturen zu suchen.
</p>
<div class="mw-heading mw-heading2"><h2 id="Literatur">Literatur</h2></div>
<ul><li>K. Hübner: <i>Chemical Abstracts: CAS bringt Übersicht in die publizierte Chemie.</i> In: <i><a href="Chemie_in_unserer_Zeit" title="Chemie in unserer Zeit">Chemie in unserer Zeit</a>.</i> 37, 2003, S. 284–285 (<a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1002/ciuz.200390060">10.1002/ciuz.200390060</a></span>).</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://www.cas.org">CAS Homepage</a> <a rel="nofollow" class="external text" href="http://www.cas.org/about-cas/cas-history">History</a></li>
<li><a rel="nofollow" class="external text" href="http://www.stn-international.de">STN Homepage</a></li>
<li><a rel="nofollow" class="external text" href="http://cassi.cas.org/search.jsp">CASSI Search Tool</a> Fachzeitschriftennamen in Abkürzungen für Literaturnachweise umrechnen und umgekehrt. Auch für CODEN, ISBN und ISSN.</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-Hübner-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Hübner_1-0">a</a></sup> <sup><a href="#cite_ref-Hübner_1-1">b</a></sup></span> <span class="reference-text">K. Hübner: <i>Chemical Abstracts: CAS bringt Übersicht in die publizierte Chemie.</i> In: <i><a href="Chemie_in_unserer_Zeit" title="Chemie in unserer Zeit">Chemie in unserer Zeit</a>.</i> 37, 2003, S. 284–285 (<a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1002/ciuz.200390060">10.1002/ciuz.200390060</a></span>).</span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r261891140">
/* start https://de.wikipedia.org/ */


.mw-parser-output .webarchiv-memento a{color:inherit}


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</style><a rel="nofollow" class="external text" href="https://web.archive.org/web/20171112051147/http://www.cas.org/news/insights/science-connections/40m-substance">CAS Registers 40 Millionth Substance</a> (<span class="webarchiv-memento"><a href="Webarchivierung#Begrifflichkeiten" title="Webarchivierung">Memento</a></span> vom 12. November 2017 im <i><a href="Internet_Archive" title="Internet Archive">Internet Archive</a></i>)</span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160604184934/http://www.cas.org/news/insights/science-connections/50m-substance">CAS Registers 50 Millionth Substance</a> (<span class="webarchiv-memento"><a href="Webarchivierung#Begrifflichkeiten" title="Webarchivierung">Memento</a></span> vom 4. Juni 2016 im <i><a href="Internet_Archive" title="Internet Archive">Internet Archive</a></i>)</span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120511140120/http://www.cas.org/newsevents/releases/60millionth052011.html">CAS REGISTRYSM Keeps Pace with Rapid Growth of Chemical Research, Registers 60 Millionth Substance</a> (<span class="webarchiv-memento"><a href="Webarchivierung#Begrifflichkeiten" title="Webarchivierung">Memento</a></span> vom 11. Mai 2012 im <i><a href="Internet_Archive" title="Internet Archive">Internet Archive</a></i>)</span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.cas.org/news/product-news/70-millionth-substance">CAS Registers 70 Millionth Substance Just 18 Months After Reaching 60 Millionth Milestone</a></span>
</li>
<li id="cite_note-100Mill-6"><span class="mw-cite-backlink"><a href="#cite_ref-100Mill_6-0">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.cas.org/news/media-releases/100-millionth-substance"><i>CAS Assigns the 100 Millionth CAS Registry Number® to a Substance Designed to Treat Acute Myeloid Leukemia</i></a>, Medienmitteilung der CAS, 29. Juni 2015.</span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.cas.org/content/chemical-substances"><i>CAS REGISTRY<sup>SM</sup> contains more than 135 million unique organic and inorganic chemical substances</i></a>, abgerufen am 18. Dezember 2017.</span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.cas.org/about/cas-content">The World's Largest Collection of Chemistry Insights</a>, abgerufen am 18. März 2021.</span>
</li>
<li id="cite_note-Content-9"><span class="mw-cite-backlink"><a href="#cite_ref-Content_9-0">↑</a></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://www.cas.org/cas-data/cas-registry"><i>CAS Registry®.</i></a><span class="Abrufdatum"> Abgerufen am 8.&nbsp;Mai 2024</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3AChemical+Abstracts+Service&amp;rft.title=CAS+Registry%C2%AE&amp;rft.description=CAS+Registry%C2%AE&amp;rft.identifier=https%3A%2F%2Fwww.cas.org%2Fcas-data%2Fcas-registry">&nbsp;</span></span>
</li>
<li id="cite_note-CAS-Data-10"><span class="mw-cite-backlink"><a href="#cite_ref-CAS-Data_10-0">↑</a></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://www.cas.org/cas-data"><i>CAS DATA-CAS Registry®.</i></a><span class="Abrufdatum"> Abgerufen am 9.&nbsp;November 2025</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3AChemical+Abstracts+Service&amp;rft.title=CAS+DATA-CAS+Registry%C2%AE&amp;rft.description=CAS+DATA-CAS+Registry%C2%AE&amp;rft.identifier=https%3A%2F%2Fwww.cas.org%2Fcas-data">&nbsp;</span></span>
</li>
<li id="cite_note-REG-11"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-REG_11-0">a</a></sup> <sup><a href="#cite_ref-REG_11-1">b</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.cas.org/cas-data/cas-registry">CAS Registry</a></span>
</li>
<li id="cite_note-12"><span class="mw-cite-backlink"><a href="#cite_ref-12">↑</a></span> <span class="reference-text">Andrea Jacobs, Dustin Williams, Katherine Hickey, Nathan Patrick, Antony J. Williams, Stuart Chalk, Leah McEwen, Egon Willighagen, Martin Walker, Evan Bolton, Gabriel Sinclair, Adam Sanford: <cite style="font-style:italic">CAS Common Chemistry in 2021: Expanding Access to Trusted Chemical Information for the Scientific Community</cite>. In: <cite style="font-style:italic"><a href="Journal_of_Chemical_Information_and_Modeling" title="Journal of Chemical Information and Modeling">Journal of Chemical Information and Modeling</a></cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>62</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em">&nbsp;</span>11</span>, 13.&nbsp;Juni 2022, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>2737–2743</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1021/acs.jcim.2c00268">10.1021/acs.jcim.2c00268</a></span>, <a class="external mw-magiclink-pmid" rel="nofollow" href="https://www.ncbi.nlm.nih.gov/pubmed/35559614?dopt=Abstract">PMID 35559614</a>, <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9199008/">PMC&nbsp;9199008</a> (freier Volltext).<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rfr_id=info:sid/de.wikipedia.org:Chemical+Abstracts+Service&amp;rft.atitle=CAS+Common+Chemistry+in+2021%3A+Expanding+Access+to+Trusted+Chemical+Information+for+the+Scientific+Community&amp;rft.au=Andrea+Jacobs%2C+Dustin+Williams%2C+Katherine+Hickey%2C+...&amp;rft.date=2022-06-13&amp;rft.doi=10.1021%2Facs.jcim.2c00268&amp;rft.genre=journal&amp;rft.issue=11&amp;rft.jtitle=Journal+of+Chemical+Information+and+Modeling&amp;rft.pages=2737-2743&amp;rft.pmc=9199008&amp;rft.pmid=35559614&amp;rft.volume=62" style="display:none">&nbsp;</span></span>
</li>
<li id="cite_note-CASSIST-13"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-CASSIST_13-0">a</a></sup> <sup><a href="#cite_ref-CASSIST_13-1">b</a></sup> <sup><a href="#cite_ref-CASSIST_13-2">c</a></sup></span> <span class="reference-text"><i>Chemical Abstracts Service Source Index&nbsp;: Standardisierte Zeitschriftenabkürzungen.</i> Freie Universität Berlin, <a rel="nofollow" class="external text" href="https://www.bcp.fu-berlin.de/chemie/chemie/studium/ocpraktikum/ressourcen/chemieinformationen/CASSI.html">fu-berlin.de</a>, abgerufen am 13. November 2018.</span>
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Normdaten&nbsp;(Körperschaft): <a href="Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/26363-1">26363-1</a></span> | <a href="Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/n80145742">n80145742</a></span> | <a href="Virtual_International_Authority_File" title="Virtual International Authority File">VIAF</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/133548032/">133548032</a></span> </div>
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