This database contains the CAS Registry Number®, chemical names (both formal and common), molecular formulas, and structures or sequences for ~7900 chemicals of widespread general public interest. These substances are of global commercial use or importance and have been cited 1,000 or more times in the CAS databases. Examples of substances included are aspirin, biotin, benzoyl peroxide, and boric acid. The Common Chemistry database also includes all 118 elements of the Periodic Table, although not all of the elements may meet the 1,000 references threshold.
Links to Wikipedia records (when available) have been provided by the Wikipedia Chemicals WikiProject in collaboration with Chemical Abstracts Service.
You can quickly and easily confirm a chemical name, CAS Registry Number, or structure from this database of common, everyday chemicals.
You can search for substances in Common Chemistry by either their CAS Registry Number or by their chemical name. Chemical name searches can be by exact name if you have one or by name fragment. CAS Registry Number searches are exact search only. Consult the Help page for additional search tips and details.
Common Chemistry is provided by CAS as a public service. If the data is used in other public facing databases or applications an acknowledgement of Common Chemistry from CAS (www.commonchemistry.org.) as a data source is desired. (disclaimer)
This database will be updated periodically. Information such as Wikipedia links may be added on a more frequent basis as it becomes available.
Database last updated May 2015.
The Science of Synthesis began coverage in 2001 and considers and critically reviews methods from journals, books, and patent literature and presents important synthetic methods for all classes of organic compounds.
The SOS Web version also covers former Houben-Weyl treatise (1952-2003) in a separate search box. Critically reviews chemical reaction literature with emphasis on functional group conversions. The Houben-Weyl electronic backfile (1909 to 2003) provides immediate access to 146 000 product specific experimental procedures, 580 000 structures, and 700 000 references in all fields of synthetic organic chemistry - dating back to the early 1800s. [Princeton has this set in its entirety.]
e-EROS (Encyclopedia of Reagents for Organic Synthesis) is an updated version of the 2nd edition of the print work by the same title. It includes chemical reactions and structures. The database contains 70,000 reactions and 4000 of the most frequently consulted reagents.
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