{
  "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": "0b14c4ac-c6e0-414c-b2b8-2e5799042a7f",
          "code": "13780-06-8",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=13780-06-8",
          "code_system": "CAS",
          "references": [
            "c8db9492-99d6-46d4-aa37-b47d5a7f8a9c",
            "07343485-873a-4823-a09b-4604065a0c1d"
          ]
        },
        {
          "uuid": "e8f7dab8-aa69-43e6-a15d-86e0a04f4d43",
          "code": "76202",
          "comments": "EPA PESTICIDE|CONVENTIONAL CHEMICAL",
          "type": "PRIMARY",
          "url": "http://iaspub.epa.gov/apex/pesticides/f?p=CHEMICALSEARCH:3:0::NO:21,3,31,7,12,25:P3_XCHEMICAL_ID:1677",
          "code_system": "EPA PESTICIDE CODE",
          "references": [
            "c8db9492-99d6-46d4-aa37-b47d5a7f8a9c"
          ]
        },
        {
          "uuid": "191e3c29-be13-426e-b135-a90bf3a775e5",
          "code": "m2955",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m2955?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "c8db9492-99d6-46d4-aa37-b47d5a7f8a9c"
          ]
        },
        {
          "uuid": "babf0628-d6b9-470e-b837-52742c161f08",
          "code": "237-424-2",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.034.008",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "c8db9492-99d6-46d4-aa37-b47d5a7f8a9c"
          ]
        },
        {
          "uuid": "63bd4371-76fc-4544-97e9-59a8b30ee205",
          "code": "159695",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/159695",
          "code_system": "PUBCHEM",
          "references": [
            "c8db9492-99d6-46d4-aa37-b47d5a7f8a9c"
          ]
        },
        {
          "uuid": "37d7477d-527b-3c8e-aa23-6d7976410fa9",
          "code": "DTXSID6065634",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID6065634",
          "code_system": "EPA CompTox",
          "references": [
            "226cd106-9cc5-8772-c54e-8782cdc639cb"
          ]
        },
        {
          "uuid": "790a2d3c-4e7a-48d7-a39f-737e4441ef12",
          "code": "F538343O0T",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "95700d66-59d9-c698-9d7d-f2287e20abad",
          "code": "Calcium nitrite",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Calcium_nitrite",
          "code_system": "WIKIPEDIA",
          "references": [
            "3e049cd1-32e2-8151-10b4-59420e422f36"
          ]
        },
        {
          "uuid": "521d02b9-4c6d-5b6d-9fd8-50df44e17589",
          "code": "F538343O0T",
          "type": "PRIMARY",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=F538343O0T",
          "code_system": "DAILYMED",
          "references": [
            "369e9ffa-1884-e7fa-6a61-29671c824bd2"
          ]
        },
        {
          "uuid": "0ed0b30c-cdb1-b6c0-7cc3-d1914fafd197",
          "code": "300000053158",
          "type": "PRIMARY",
          "code_system": "SMS_ID",
          "references": [
            "4ea74c71-fb99-dafc-7657-9501d5536fe3"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "3a521d49-e801-470b-b363-c078be49a666",
          "name": "CALCIUM DINITRITE",
          "stdName": "CALCIUM DINITRITE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "43d1710e-88d1-41f3-89d8-988fcf96af8a",
            "b9cf4bff-4cca-4b01-b887-8f7d14ddb0e1"
          ],
          "display_name": false
        },
        {
          "uuid": "9c9d62ce-2586-4c96-bda5-146639be6191",
          "name": "CALCIUM NITRITE",
          "stdName": "CALCIUM NITRITE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "f0282d93-bfbe-4810-8c6c-a5c84dc4bb3b",
            "43d1710e-88d1-41f3-89d8-988fcf96af8a",
            "1dc01173-29d7-4a1c-a093-2ed9f991f3e7"
          ],
          "display_name": true
        },
        {
          "uuid": "0eae4da8-b55a-478d-b7eb-685955ffada4",
          "name": "CALCIUM NITRITE (CA(NO2)2)",
          "stdName": "CALCIUM NITRITE (CA(NO2)2)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "43d1710e-88d1-41f3-89d8-988fcf96af8a",
            "b9cf4bff-4cca-4b01-b887-8f7d14ddb0e1"
          ],
          "display_name": false
        },
        {
          "uuid": "7a74e324-934a-4db3-b605-e6da6d906402",
          "name": "CALCIUM NITRITE [MI]",
          "stdName": "CALCIUM NITRITE [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "f0282d93-bfbe-4810-8c6c-a5c84dc4bb3b",
            "43d1710e-88d1-41f3-89d8-988fcf96af8a"
          ],
          "display_name": false
        },
        {
          "uuid": "69935e22-44b3-4a2f-9201-89f16bcc6ab2",
          "name": "NITROUS ACID CALCIUM SALT (2:1)",
          "stdName": "NITROUS ACID CALCIUM SALT (2:1)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "f0282d93-bfbe-4810-8c6c-a5c84dc4bb3b",
            "43d1710e-88d1-41f3-89d8-988fcf96af8a"
          ],
          "display_name": false
        },
        {
          "uuid": "a2443199-8d48-439c-ba81-057805e4c5e3",
          "name": "NITROUS ACID, CALCIUM SALT",
          "stdName": "NITROUS ACID, CALCIUM SALT",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "43d1710e-88d1-41f3-89d8-988fcf96af8a",
            "b9cf4bff-4cca-4b01-b887-8f7d14ddb0e1"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "f0282d93-bfbe-4810-8c6c-a5c84dc4bb3b",
          "citation": "MERCK",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "43d1710e-88d1-41f3-89d8-988fcf96af8a",
          "citation": "MERCK INDEX",
          "doc_type": "MERCK INDEX",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b9cf4bff-4cca-4b01-b887-8f7d14ddb0e1",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "c8db9492-99d6-46d4-aa37-b47d5a7f8a9c",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391663000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4a913437-aca6-49e7-90d4-456ffddf82cb",
          "citation": "SRS import [F538343O0T]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=F538343O0T",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391663000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "a27e5821-beb6-4de3-8323-43de136a80de",
          "citation": "CHEMID RECORD 13780-06-8",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "1dc01173-29d7-4a1c-a093-2ed9f991f3e7",
          "citation": "CALCIUM NITRITE [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "226cd106-9cc5-8772-c54e-8782cdc639cb",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=13780-06-8",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "3e049cd1-32e2-8151-10b4-59420e422f36",
          "citation": "WIKI",
          "doc_type": "WIKI",
          "public_domain": true
        },
        {
          "uuid": "07343485-873a-4823-a09b-4604065a0c1d",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "369e9ffa-1884-e7fa-6a61-29671c824bd2",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        },
        {
          "uuid": "4ea74c71-fb99-dafc-7657-9501d5536fe3",
          "citation": "SMS",
          "doc_type": "EMA LIST",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "006ad448-441e-4d48-af29-82b22ecc5306",
          "id": "006ad448-441e-4d48-af29-82b22ecc5306",
          "molfile": "\n  Marvin  01132100202D          \n\n  1  0  0  0  0  0            999 V2000\n   12.5614   -6.4165    0.0000 Ca  0  2  0  0  0  0  0  0  0  0  0  0\nM  CHG  1   1   2\nM  END",
          "smiles": "[Ca+2]",
          "formula": "Ca",
          "atropisomerism": "No",
          "charge": 2,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "6114beb5-f99a-4dde-946b-01bb53fd302b"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "40.078",
          "optical_activity": "NONE",
          "stereo_centers": 0
        },
        {
          "uuid": "be5e5784-426c-47b5-962e-7a9686ca43a1",
          "id": "be5e5784-426c-47b5-962e-7a9686ca43a1",
          "molfile": "\n  Marvin  01132109512D          \n\n  3  2  0  0  0  0            999 V2000\n    9.1046   -6.0745    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    8.3923   -5.6617    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.6760   -6.0745    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  CHG  1   1  -1\nM  END",
          "smiles": "N(=O)[O-]",
          "formula": "NO2",
          "atropisomerism": "No",
          "charge": -1,
          "count": 2,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 2,
            "units": "MOL RATIO",
            "uuid": "e772e70c-e063-43e7-b6b2-79b3a04898e7"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "46.0055",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "f372a948-170f-4d58-8334-40ef4703fc4e",
      "version": "6",
      "structure": {
        "id": "9e19347b-eb6e-4bf9-bad8-d564416ca0a0",
        "molfile": "\n  Marvin  01132108132D          \n\n  7  4  0  0  0  0            999 V2000\n   12.5614   -6.4165    0.0000 Ca  0  2  0  0  0  0  0  0  0  0  0  0\n    7.6760   -6.0745    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1046   -6.0745    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    8.3923   -5.6617    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.6760   -6.0745    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1046   -6.0745    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    8.3923   -5.6617    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n  4  3  1  0  0  0  0\n  4  2  2  0  0  0  0\n  7  5  2  0  0  0  0\n  7  6  1  0  0  0  0\nM  CHG  3   1   2   3  -1   6  -1\nM  STY  1   1 MUL\nM  SCN  1   1 HT \nM  SAL   1  6   2   3   4   5   6   7\nM  SPA   1  3   2   3   4\nM  SDI   1  4    7.2560   -6.4945    7.2560   -5.2417\nM  SDI   1  4    9.5246   -5.2417    9.5246   -6.4945\nM  SMT   1 2\nM  END",
        "smiles": "[Ca+2].N(=O)[O-].N(=O)[O-]",
        "formula": "Ca.2NO2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "132.089",
        "optical_activity": "NONE",
        "references": [
          "4a913437-aca6-49e7-90d4-456ffddf82cb",
          "a27e5821-beb6-4de3-8323-43de136a80de"
        ],
        "stereo_centers": 0
      },
      "unii": "F538343O0T"
    }
  ]
}