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CAS Common Chemistry

CAS Common Chemistry is a publicly available resource that provides authoritative information on nearly 500,000 compounds from CAS REGISTRY®. The collection represents substances commonly found on regulatory lists, in consumer products and as part of introductory chemical curricula. Search functionality and an application programming interface (API) enable interested individuals to quickly find chemical names, CAS Registry Numbers®, structures or basic compound properties.

Accurate chemical information is a high priority for many. With CAS Common Chemistry, concerned consumers have a reliable source of information readily available on substances of interest to promote safe practices and foster learning.