chemistry

Look up a chemical compound's canonical properties from PubChem

Resolves any common identifier (name, CAS, CID, SMILES, InChI, InChIKey) to a compound and returns formula, molecular weight, IUPAC name, canonical/isomeric SMILES, InChI, InChIKey, and the PubChem CID. Backed by PubChem (NIH/NLM), Redis-cached 30 days. Unknown compound -> confidence 0.0; PubChem outage -> 503. For the full synonym list use /chemistry/synonyms. Charges 2 cost_units; 1 when the query is empty (rejected locally before PubChem is called); an unknown query_type is a request-shape error, rejected unbilled (INVALID_INPUT).

post/v1/chemistry/compound/lookup

Request

  • Base URL: https://api.snipget.ai (the document declares no server; this is the origin it was published from)
  • URL: https://api.snipget.ai/v1/chemistry/compound/lookup
  • Auth: none declared

Query parameters

include_receiptboolean

Set true to attach an execution receipt at meta.receipt — caller-verifiable sha256 hashes over the RFC 8785 (JCS) canonicalization of this call's as-received JSON body and its result (free, like include_trace). Reproduce with any JCS library: input_hash = sha256(jcs({"tool": <request path>, "args": <your body minus include_trace/include_receipt>})); result_hash = sha256(jcs(result)). For deterministic tools, same input on the same build reproduces result_hash.

Headers

authorizationstring nullable
X-API-Keystring nullable

Request body

querystring required

The compound identifier to look up (e.g. 'aspirin').

query_typestring

Identifier type: name, cas, cid, smiles, inchi, or inchikey. A CAS number resolves as a PubChem name synonym. Default 'name'.

include_traceboolean

Response

Successful Response

statusstring
confidencenumber required

Changes

No recorded changes to this operation across all 1 revision of this API.