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CAS - Delivering The Most Complete and Effective Digital Information Environment

CAS, a division of the American Chemical Society, is the most authoritative and comprehensive source for chemical information. CAS databases, including CAS REGISTRY^SM, the gold standard for substance information, are curated and quality-controlled by CAS scientists. Combining these databases with advanced search and analysis technologies, CAS delivers the most complete, cross-linked, and effective digital information environment for scientific research and discovery through such products as SciFinder, STN, STN Express, and STN AnaVist^TM, as well as services, such as Science IP.

CAS and STN are represented worldwide by international representatives.

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