PubChem PUG REST
Retrieve chemical compound structures, properties, and bioactivity data from NIH's PubChem.
PubChem PUG REST is listed in Government & Science.
Auth No auth Pricing Free URL https://pubchem.ncbi.nlm.nih.gov/ Docs https://pubchem.ncbi.nlm.nih.gov/docs/pug-rest
Key metrics
5 req/sec Rate limit Free and keyless; capped at no more than 5 requests/second and 400 requests/minute per IP.
Gotchas
No gotchas documented yet. Contribute one if you know a constraint we missed.
Labels
- No auth
No auth
Callable with no API key or login — lowest-friction to integrate.
chemistry compounds molecules ncbi bioactivity