GET /compound/inchikey/{inchikey}/property/{properties}/{output}

nih.gov:pubchem-property-api

Summary: Get compound properties by InChIKey
Operation ID: getCompoundPropertiesByInChIKey
Auth: unknown
Description

Retrieve chemical properties for a compound specified by its InChIKey

Parameters (3)

inchikey (string, path, required)

InChIKey identifier

output (string, path, required, default: JSON)

Output format

Constraints: {'enum': ['JSON', 'XML']}

properties (string, path, required)

Comma-separated list of properties to retrieve

Examples (3)

TitleTypeURLAction
Get properties by InChIKey openapi-spec https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/inchikey/BSYNRYMUTXBXSQ-UHFFFAOYSA-N/property/MolecularFormula,MolecularWeight/JSON
Get compound properties by InChIKey openapi-spec https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/inchikey/XLYOFNOQVPJJNP-UHFFFAOYSA-N/property/MolecularFormula,MolecularWeight/{output}
Get compound properties by InChIKey probe-gate https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/inchikey/XLYOFNOQVPJJNP-UHFFFAOYSA-N/property/MolecularFormula,MolecularWeight/JSON

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 09:11:21.961081 200 450ms
2026-03-23 09:06:19.699671 200 443ms

Response Changes

WhenOldNew
2026-03-23 09:11:21.961081 f4f7c1daa3a7 2cd7098146ac