Chemical Abstracts Service
The Chemical Abstracts Service ( CAS ) is a subdivision of the American Chemical Society founded in 1907 and based in Columbus , Ohio . Its publication organ Chemical Abstracts (CA) aims to index and summarize all chemistry- relevant publications worldwide . Around 10,000 journals (as of 2010), books in around 50 languages, dissertations , conference reports and patents from 27 national organizations and two international organizations evaluated.
Databases
| time | Number of registered connections Note | source |
|---|---|---|
| 1990 | 10 million | |
| 2000 | 22 million | |
| November 21, 2008 | 40 million | |
| September 7, 2009 | 50 million | |
| May 24, 2011 | 60 million | |
| December 6, 2012 | 70 million | |
| June 29, 2015 | 100 million | |
| December 2017 | > 135 million | |
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Note Organic and inorganic compounds, without protein sequences
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The CAS is best known for its large databases of chemical compounds and their unique key, the CAS Registry Number , usually called CAS number in German . In June 2015, 100 million registered organic and inorganic substances were reached. Most of the services and products offered by CAS are commercial. STN (The Scientific & Technical Information Network) is important for research access to the CAS (and other) specialist and patent databases .
CASSI (CAS Source Index) regulates how journal titles are abbreviated for reference in references. The 'CASSI Search Tool' automates the process in both directions. The trade journal title can be generated from an abbreviation and vice versa. You can also use the CODEN, ISBN, etc. ISSN of the corresponding journal / book title can be found.
software
CAS publishes the commercial computer program SciFinder for searching the databases. The SciFinder Scholar is a version with limited search options that is often used at universities. Both offer a graphical user interface that allows you to search for chemical structures.
literature
- K. Huebner: Chemical Abstracts: CAS provides an overview of the published chemistry. In: Chemistry in Our Time . 37, 2003, pp. 284-285 ( doi : 10.1002 / ciuz.200390060 ).
Web links
- CAS Homepage History
- STN homepage
- CASSI Search Tool convert trade journal names into abbreviations for references and vice versa. Also for CODEN, ISBN and ISSN.
Individual evidence
- ↑ a b K. Huebner: Chemical Abstracts: CAS provides an overview of the published chemistry. In: Chemistry in Our Time . 37, 2003, pp. 284-285 ( doi : 10.1002 / ciuz.200390060 ).
- ↑ CAS Registers 40 Millionth Substance ( Memento of the original from November 12, 2017 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ CAS Registers 50 Millionth Substance ( Memento of the original from June 4, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ CAS REGISTRYSM Keeps Pace with Rapid Growth of Chemical Research, Registers 60 Millionth Substance ( Memento of the original from May 11, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ CAS Registers 70 Millionth Substance Just 18 Months After Reaching 60 Millionth Milestone
- ↑ a b CAS Assigns the 100 Millionth CAS Registry Number® to a Substance Designed to Treat Acute Myeloid Leukemia , CAS press release, June 29, 2015.
- ↑ CAS REGISTRY SM contains more than 135 million unique organic and inorganic chemical substances , accessed on December 18, 2017.
- ↑ a b c Chemical Abstracts Service Source Index: Standardized journal abbreviations. Freie Universität Berlin, fu-berlin.de , accessed on November 13, 2018.
