PubChem provides information on the biological activities of small molecules. It is a component of NIH's Molecular Library (free registration).

PubChem includes substance information, compound structures, and BioActivity data in three primary databases: Pcsubstance, Pccompound, and PCBioAssay.

The Substance/Compound database, where possible, provides links to bioassay descriptions, literature, references, and assay data points. The BioAssay database also includes links back to the Substance/Compound database. PubChem is integrated with Entrez , NCBI's primary search engine, and also provides compound neighboring, sub/superstructure, similarity structure, bioactivity data, and other searching features.

PubChem contains substance and bioassay information from a multitude of depositors.    -more-

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HOURS for June 22, 2021