PubChem
Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more.
PubChem is a free and open database of chemical molecules and their activities against biological assays. It is maintained by the National Center for Biotechnology Information (NCBI), a part of the National Library of Medicine (NLM), which is a component of the National Institutes of Health (NIH). PubChem provides information on the biological activities of small molecules and is a key resource for researchers in the fields of chemical biology, medicinal chemistry, and drug discovery.
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English, etc
Website Key Features
Compound Search
Allows users to search for chemical compounds by name, structure, or other identifiers.
BioActivity Data
Provides access to bioactivity data for small molecules against biological targets.
Substance Database
Contains information on substances provided by depositors, including chemical structures, synonyms, and links to biological test results.
BioAssay Database
Offers detailed information on biological assay protocols and results.
Structure Editor
Includes a tool for drawing and editing chemical structures for search purposes.
Downloadable Data
Users can download chemical and bioactivity data in various formats for offline analysis.
API Access
Provides programmatic access to PubChem data through a RESTful API.
Chemical Properties
Displays detailed chemical properties and descriptors for compounds.
Toxicity Data
Includes toxicity information for chemicals, sourced from various studies.
Patent Links
Links to patents that mention specific compounds, providing context for their use and study.
Additional information
Update Frequency
PubChem is updated continuously, with new data added as it becomes available from depositors.
Data Sources
Data in PubChem comes from a variety of sources, including government agencies, academic labs, and commercial entities.
User Community
PubChem serves a global community of researchers, educators, students, and the general public interested in chemical information.
Integration with Other NCBI Resources
PubChem is integrated with other NCBI databases, such as PubMed and Protein, facilitating cross-disciplinary research.
Educational Resources
Provides tutorials and documentation to help users navigate and utilize the database effectively.
Privacy and Data Use
PubChem adheres to strict privacy policies, ensuring that user data is protected while promoting open access to chemical information.
HTTP headers
Security headers report is a very important part of user data protection. Learn more about http headers for pubchem.ncbi.nlm.nih.gov