Editing Chemical Abstracts Service (section)

==Products==
CAS databases are available via two principal database systems, STN, and SciFinder.

===STN===
[[Image:CAS pelotonia.jpg|right|thumb|370px|Chemical Abstracts Service Building B in August 2009. Columbus, Ohio]]
STN (Scientific & Technical Information Network) International is operated jointly<ref>{{cite web|url=http://www.stn-international.com/service/about_us.html|title=STN International: Home|author=FIZ Karlsruhe|work=stn-international.com|access-date=2008-07-10|archive-url=https://web.archive.org/web/20081102211229/http://www.stn-international.com/service/about_us.html|archive-date=2008-11-02|url-status=dead}}</ref> by CAS and [[FIZ Karlsruhe]], and is intended primarily for information professionals, using a [[command language]] interface. In addition to CAS databases, STN also provides access to many other databases, similar to [[Dialog (online database)|Dialog]].

===SciFinder===
SciFinder is a database of chemical and bibliographic information. Originally it was available only as a [[Client (computing)|client]] application (for both [[Microsoft Windows|Windows]] and [[Macintosh operating systems|MacOS]] operating systems), a web version was released in 2008.<ref>"[http://www.cas.org/newsevents/releases/scifinderweb040708.html New SciFinder Available Via the Web] {{Webarchive|url=https://web.archive.org/web/20080513152556/http://www.cas.org/newsevents/releases/scifinderweb040708.html |date=2008-05-13 }}". CAS. April 6, 2008.</ref> 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.{{cn|date=March 2024}} SciFinder Scholar was a very similar a product developed for academic institutions, but discontinued in 2023.<ref>[http://www.cas.org/SCIFINDER/SCHOLAR/ SciFinder Scholar] {{Webarchive|url=https://web.archive.org/web/20061006181821/http://www.cas.org/SCIFINDER/SCHOLAR/ |date=2006-10-06 }}, CAS</ref><ref>{{cite web | url=https://blog.lib.uiowa.edu/science/2022/09/16/scifinder-classic-is-retiring/ | title=SciFinder Classic is Retiring – Sciences Library News | date=16 September 2022 }}</ref>
In 2017 the [[American Chemical Society|ACS]] released SciFinder-n as a web-only product with the same data content and improved user interface and search functions.<ref>{{cite press release | url=https://www.prnewswire.com/news-releases/cas-announces-scifinder-n-a-new-research-experience-that-elevates-scientific-discovery-300316096.html | title=CAS announces SciFinder-n, a new research experience that elevates scientific discovery }}</ref> 

SciFinder is considered as the best source of chemical information worldwide, with substantially larger number of relevant information sources than [[Web of Science]] or [[Scopus]] with [[Reaxys]].<ref>{{cite journal | doi=10.1080/15424065.2010.505518 | title=Citation Analysis: Comparison of Web of Science®, Scopus™, SciFinder®, and Google Scholar | year=2010 | last1=Li | first1=Jie | last2=Burnham | first2=Judy F. | last3=Lemley | first3=Trey | last4=Britton | first4=Robert M. | journal=Journal of Electronic Resources in Medical Libraries | volume=7 | issue=3 | pages=196–217 | s2cid=62564372 }}</ref> However, due to its unique and unusual search functions, substantial training is needed in order to fully take advantage of SciFinder capabilities.<ref>{{cite journal | pmc=6148602 | year=2018 | last1=Gabrielson | first1=S. W. | title=SciFinder | journal=Journal of the Medical Library Association | volume=106 | issue=4 | pages=588–590 | doi=10.5195/jmla.2018.515 }}</ref>

===CASSI===
''CASSI'' stands for ''Chemical Abstracts Service Source Index''. 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, [[CODEN]], [[ISSN]], [[scientific journal|publisher]], and date of first issue (history) for a selected journal. Also included is its language of text and language of summaries.<ref name=cassi/>

The range is from 1907 to the present, including both serial and non-serial scientific and technical publications. The database is updated quarterly.<ref name=cassi>{{Cite web
 | title =About the CAS Source Index (CASSI) Search Tool 
 | work =Provided by Chemical Abstracts Service 
 | publisher =American Chemical Society 
 | date = December 2009 
 | url =http://cassi.cas.org/about.jsp 
 | access-date =2016-08-26}}</ref> ''Beyond CASSI'' lists abbreviated journal titles from early chemical literature and other historical reference sources.<ref>{{citation |url=http://www.cas.org/File%20Library/products/beyond_cassi.pdf |access-date=2015-08-27 |publisher=Chemical Abstracts Service |last1=Peters |first1=Marion |title=Beyond CASSI |archive-date=2017-07-03 |archive-url=https://web.archive.org/web/20170703061922/http://www.cas.org/File%20Library/products/beyond_cassi.pdf |url-status=dead }}</ref>