Chemical Abstracts Service

Chemical Abstracts Service (CAS), a division of the American Chemical Society, is considered the world's leading source of chemical information. The company's proprietary databases are curated by CAS scientists and recognized by chemical and pharmaceutical companies, universities, government organizations, and patent offices around the world as an important source of chemical information. By combining these databases with advanced search and analysis technologies, CAS databases are said to deliver a current, complete, and cross-linked digital information environment for scientific discovery.

CAS is located in Columbus, Ohio, United States.

In 2007 the Chemical Abstracts Service was designated an ACS National Historic Chemical Landmark in recognition of its significance as the most comprehensive repository of research in chemistry and related sciences.

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