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The Molecular Libraries and Imaging Program has transitioned from Common Fund support. For more information, please visit: https://commonfund.nih.gov/molecularlibraries/index. Please note that since Molecular Libraries and Imaging program is no longer supported by the Common Fund, the program website is being maintained as an archive and will not be updated on a regular basis. 







PubChem Database provides information on the biological activities of small molecules.


PubChem BioAssay

The PubChem BioAssay Database contains bioactivity screens of chemical substances described in PubChem Substance. It provides searchable descriptions of each bioassay, including descriptions of the conditions and readouts specific to that screening procedure.


PubChem Substance

The PubChem Substance Database contains descriptions of samples, from a variety of sources, and links to biological screening results that are available in PubChem BioAssay. If the chemical contents of a sample are known, the description includes links to PubChem Compound.

PubChem Compound

The PubChem Compound Database contains validated chemical depiction information provided to describe substances in PubChem Substance. Structures stored within PubChem Compounds are pre-clustered and cross-referenced by identity and similarity groups.

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