Cortexa research tool·structure·fda_gsrs

FDAGSRS Search Substances

Search FDA GSRS (Global Substance Registration System) for substances by name, UNII code, InChIKey, or formula. Returns official FDA substance records with UNII identifiers, substance class, structure, and cross-references (DrugBank, WHO-ATC, CAS, EC/EINECS, CFR). No API key required. Example: 'aspirin' -> UNII R16CO5Y76E, chemical, approved.

Livelast probed 2026-05-01 01:00Z· 583msCortexa

Status

The most recent probe succeeded. Safe to call from the agent today.

Last probed: 1d ago
Last success: 1d ago
Last latency: 583ms

Schema

JSON Schema the agent (or your API call) must match.

{
  "properties": {
    "limit": {
      "description": "Maximum number of results to return (1-50, default 10).",
      "type": [
        "integer",
        "null"
      ]
    },
    "query": {
      "description": "Search query: drug/chemical name, UNII code, InChIKey, or molecular formula. Examples: 'aspirin', 'semaglutide', 'R16CO5Y76E', 'C9H8O4', 'BSYNRYMUTXBXSQ-UHFFFAOYSA-N'.",
      "type": "string"
    },
    "substance_class": {
      "description": "Filter by substance class. Options: 'chemical', 'protein', 'mixture', 'polymer', 'nucleicAcid', 'structurallyDiverse', 'specifiedSubstanceG1'. Default: no filter (all classes).",
      "type": [
        "string",
        "null"
      ]
    }
  },
  "required": [
    "query"
  ],
  "type": "object"
}

Examples (1)

Default FDAGSRS Search Substances call

public-safeinput

{
  "query": "BRCA1"
}

Expected response keys: success

Anonymous-safe example. Rate-limited; no sign-in required.

Identifiers

Catalog ID: tu_FDAGSRS_search_substances
Tool name: FDAGSRS_search_substances
Added: 2026-05-01 00:58Z
Tags: tooluniverse

FDAGSRS Search Substances

Livelast probed 2026-05-01 01:00Z· 583msCortexa

Schema

JSON Schema the agent (or your API call) must match.

{ "properties": { "limit": { "description": "Maximum number of results to return (1-50, default 10).", "type": [ "integer", "null" ] }, "query": { "description": "Search query: drug/chemical name, UNII code, InChIKey, or molecular formula. Examples: 'aspirin', 'semaglutide', 'R16CO5Y76E', 'C9H8O4', 'BSYNRYMUTXBXSQ-UHFFFAOYSA-N'.", "type": "string" }, "substance_class": { "description": "Filter by substance class. Options: 'chemical', 'protein', 'mixture', 'polymer', 'nucleicAcid', 'structurallyDiverse', 'specifiedSubstanceG1'. Default: no filter (all classes).", "type": [ "string", "null" ] } }, "required": [ "query" ], "type": "object" }