{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-09-09",
    "results": {
      "skip": 0,
      "limit": 1,
      "total": 1
    }
  },
  "results": [
    {
      "codes": [
        {
          "uuid": "24884ca3-6a56-432a-9faf-7da925a1c41f",
          "code": "13898-47-0",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=13898-47-0",
          "code_system": "CAS",
          "references": [
            "4581a3d5-df75-4976-b854-82ab7d50ee4f",
            "8e46a411-4897-4f6e-a3a2-c8000c59e7be"
          ]
        },
        {
          "uuid": "4b6d83fd-75ca-450d-9fe4-06b60d2e5bf2",
          "code": "C063160",
          "type": "PRIMARY",
          "url": "http://www.ncbi.nlm.nih.gov/mesh/67063160",
          "code_system": "MESH",
          "references": [
            "4581a3d5-df75-4976-b854-82ab7d50ee4f"
          ]
        },
        {
          "uuid": "c44ba201-ff87-4217-b605-ae0e4497abd7",
          "code": "1543755",
          "comments": "RxNorm",
          "type": "PRIMARY",
          "url": "https://rxnav.nlm.nih.gov/REST/rxcui/1543755/allProperties.xml?prop=all",
          "code_system": "RXCUI",
          "references": [
            "4581a3d5-df75-4976-b854-82ab7d50ee4f"
          ]
        },
        {
          "uuid": "7aa09bac-2509-46d8-9d6f-a9321a920601",
          "code": "24453",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/24453",
          "code_system": "PUBCHEM",
          "references": [
            "4581a3d5-df75-4976-b854-82ab7d50ee4f"
          ]
        },
        {
          "uuid": "40e3f53f-0c24-37f3-5da4-e106707f2f99",
          "code": "Chlorous acid",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Chlorous_acid",
          "code_system": "WIKIPEDIA",
          "references": [
            "e2061317-5395-cd95-74ab-645edc234f73"
          ]
        },
        {
          "uuid": "7702debe-4f40-f759-fac0-608e048b3c96",
          "code": "DTXSID80160853",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID80160853",
          "code_system": "EPA CompTox",
          "references": [
            "9f90dcc8-6302-41de-f1fd-1d6de2523638"
          ]
        },
        {
          "uuid": "a9558986-61cd-41a3-9f58-4dc0fb0f9f96",
          "code": "7JRT833T5M",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "d49f0aba-99d6-f97b-c82b-3ebde7eb4db5",
          "code": "29219",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:29219",
          "code_system": "CHEBI",
          "references": [
            "31b831eb-b64b-adf9-ab34-6e563f2291da"
          ]
        },
        {
          "uuid": "2a9799eb-b069-2716-fd60-2f86bb87e46e",
          "code": "7JRT833T5M",
          "type": "PRIMARY",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=7JRT833T5M",
          "code_system": "DAILYMED",
          "references": [
            "7de072a4-c00f-646b-3e62-fa20089d1db1"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "66812394-3e73-4f3b-9f88-cc4a7d37bdc5",
          "type": "ACTIVE MOIETY",
          "related_substance": {
            "uuid": "ff4676d3-755f-4287-8fd3-3f2a05ba1741",
            "refuuid": "ea3e809e-f18a-4eca-bd9f-7ca119a74a6a",
            "name": "CHLOROUS ACID",
            "unii": "7JRT833T5M",
            "linking_id": "7JRT833T5M",
            "ref_pname": "CHLOROUS ACID",
            "substance_class": "reference"
          }
        },
        {
          "uuid": "28d331eb-c1c5-47bb-9be2-ecd34be2cb21",
          "type": "SALT/SOLVATE->PARENT",
          "related_substance": {
            "uuid": "9cfd4696-005e-45bd-b6c8-9b0943be216f",
            "refuuid": "546d3cd3-89b5-4f97-afe9-5885b3a8ee51",
            "name": "SODIUM CHLORITE",
            "unii": "G538EBV4VF",
            "linking_id": "G538EBV4VF",
            "ref_pname": "SODIUM CHLORITE",
            "substance_class": "reference"
          }
        },
        {
          "uuid": "e35ba912-bb57-4f7b-94f1-afd346f1568c",
          "type": "SALT/SOLVATE->PARENT",
          "related_substance": {
            "uuid": "47f61440-1180-4cf1-82ff-6bd81662f70e",
            "refuuid": "56ed281d-53e2-45ed-8591-400087491143",
            "name": "CALCIUM CHLORITE",
            "unii": "R1C35H4478",
            "linking_id": "R1C35H4478",
            "ref_pname": "CALCIUM CHLORITE",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "43be852c-642b-4415-b8de-14d720395d18",
          "name": "CHLOROUS ACID",
          "stdName": "CHLOROUS ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "01d45d24-5ca4-45c5-9b1d-ee02836d8181",
            "3ea9e4e5-c98e-4439-b883-01a090954312"
          ],
          "display_name": true
        },
        {
          "uuid": "cd91f657-ab87-4b8b-a1f0-a6511415c0a3",
          "name": "HYDROGEN CHLORITE",
          "stdName": "HYDROGEN CHLORITE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25ba65a1-127f-4ec3-aa59-87522cc4a70b"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "25ba65a1-127f-4ec3-aa59-87522cc4a70b",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "01d45d24-5ca4-45c5-9b1d-ee02836d8181",
          "citation": "ChemID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3ea9e4e5-c98e-4439-b883-01a090954312",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4581a3d5-df75-4976-b854-82ab7d50ee4f",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390859000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4e6ba15e-3a1c-42b8-b84f-752f30764d62",
          "citation": "SRS import [7JRT833T5M]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=7JRT833T5M",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390859000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "e2061317-5395-cd95-74ab-645edc234f73",
          "citation": "WIKI",
          "url": "https://en.wikipedia.org/wiki/Chlorous_acid",
          "doc_type": "WIKI",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "9f90dcc8-6302-41de-f1fd-1d6de2523638",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=13898-47-0",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "31b831eb-b64b-adf9-ab34-6e563f2291da",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "8e46a411-4897-4f6e-a3a2-c8000c59e7be",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "7de072a4-c00f-646b-3e62-fa20089d1db1",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "bfacf310-95ef-4e29-93da-ee66b0d5bc96",
          "id": "bfacf310-95ef-4e29-93da-ee66b0d5bc96",
          "molfile": "\n  Marvin  01132109542D          \n\n  3  2  0  0  0  0            999 V2000\n    6.7082   -3.2206    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    5.9420   -3.5565    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    5.2816   -3.0815    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  2  3  2  0  0  0  0\nM  END",
          "smiles": "Cl(=O)O",
          "formula": "ClHO2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "0875d2d9-1152-4dfa-b656-c3572829f8c1"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "68.4597",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "ea3e809e-f18a-4eca-bd9f-7ca119a74a6a",
      "version": "8",
      "structure": {
        "id": "f504c8aa-8583-49ce-a692-5bbbca8a5062",
        "molfile": "\n  Marvin  01132112422D          \n\n  3  2  0  0  0  0            999 V2000\n    5.9420   -3.5565    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    5.2816   -3.0815    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7082   -3.2206    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  0  0  0  0\n  1  3  1  0  0  0  0\nM  END",
        "smiles": "Cl(=O)O",
        "formula": "ClHO2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "68.4597",
        "optical_activity": "NONE",
        "references": [
          "01d45d24-5ca4-45c5-9b1d-ee02836d8181",
          "4e6ba15e-3a1c-42b8-b84f-752f30764d62"
        ],
        "stereo_centers": 0
      },
      "unii": "7JRT833T5M"
    }
  ]
}