PubChem Small Molecule Structures and Bioactivity Data

PubChem provides chemical structures and biological activity information for small organic molecules. It is organized into three primary databases: PCSubstance, PCCompound, and PCBioAssay. The data is maintained by the U.S. Department of Health & Human Services and integrated with NCBI's Entrez search system.

Use Cases

• Search for compound neighboring and similarity structure relationships using integrated chemical structure data.
• Analyze bioactivity data from the PCBioAssay database to identify potential drug candidates.
• Retrieve substance information and compound structures from PCSubstance and PCCompound for cheminformatics research.

Strengths

• Data is integrated with NCBI's Entrez search engine, providing a widely used access point.
• Contains three primary, structured databases (PCSubstance, PCCompound, PCBioAssay) for different data types.
• Maintained by the authoritative U.S. Department of Health & Human Services.

Limitations

• Specific data volume (row/record count) and granularity (column/feature count) are not provided.
• Data is delivered in HTML format, which is not optimal for bulk programmatic analysis.
• The description lacks details on temporal coverage or update frequency for the underlying data.

Provenance

Source

U.S. Department of Health & Human Services via the PubChem system.

Collection Method

Aggregated from scientific literature and contributor submissions into structured databases.

Freshness

The metadata record was last updated on 2025-06-19.