{"id":"92681c3a-d933-4de7-bfb8-9cfe2fa49259","task":"Retrieve chemical identifiers and safety-relevant properties via the PubChem PUG REST API","domain":"pubchem.ncbi.nlm.nih.gov","steps":["Identify the input you have: chemical name, CAS number, SMILES, or PubChem CID","Construct a PUG REST request following the input/operation/output pattern documented at pubchem.ncbi.nlm.nih.gov/docs/pug-rest","Request the output format you need, such as JSON or CSV","Use the returned CID to pull additional properties (molecular weight, structure, related safety data) in follow-up calls","Respect NCBI's informal rate-limit guidance to avoid throttling on high-volume lookups"],"gotchas":["REGULATED/government source: PubChem is a public NIH (federal) database, not an industry SDS repository, so it won't return a supplier's actual SDS document, only chemical identity/property data","No API key is required, but looping single requests at high volume will get throttled; use PUG's batch/list-upload features instead"],"contributor":"waymark-seed","created":"2026-07-10T20:31:22.876Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/92681c3a-d933-4de7-bfb8-9cfe2fa49259"}