{
  "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": "2025-09-19",
    "results": {
      "skip": 0,
      "limit": 1,
      "total": 1
    }
  },
  "results": [
    {
      "codes": [
        {
          "uuid": "f23018a5-220f-4d82-8ab7-a308397a70dd",
          "code": "1897-45-6",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=1897-45-6",
          "code_system": "CAS",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2",
            "175a3d16-95dd-4149-b35a-3cd4344f48a6"
          ]
        },
        {
          "uuid": "50df0fce-372f-441f-8bc6-f99ab25039e2",
          "code": "CHLOROTHALONIL",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Chlorothalonil",
          "code_system": "WIKIPEDIA",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2"
          ]
        },
        {
          "uuid": "ae452cba-1e51-4189-91a0-09c6f0129e53",
          "code": "81901",
          "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:1817",
          "code_system": "EPA PESTICIDE CODE",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2"
          ]
        },
        {
          "uuid": "a4275db6-23d6-4980-bf57-ae4716968276",
          "code": "m3439",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m3439?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2"
          ]
        },
        {
          "uuid": "bafe1a0d-e987-4e79-8f11-d21177c11e4a",
          "code": "SUB107721",
          "type": "PRIMARY",
          "code_system": "EVMPD",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2"
          ]
        },
        {
          "uuid": "beebf490-90c0-4173-8089-599b421f9d97",
          "code": "217-588-1",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.015.990",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2"
          ]
        },
        {
          "uuid": "54bb66c7-a9e3-4c9f-9ca8-6ce236b330c7",
          "code": "15910",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/15910",
          "code_system": "PUBCHEM",
          "references": [
            "5619b2a8-182b-4a61-879e-fde4e9f46de2"
          ]
        },
        {
          "uuid": "53dd05cb-e1e9-d29e-24e8-8e483cbdb665",
          "code": "1546",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/source/hsdb/1546",
          "code_system": "HSDB",
          "references": [
            "4cc8e3f9-87de-ade8-cf92-55a305c99ed1"
          ]
        },
        {
          "uuid": "290a5622-4c55-f26d-08e8-76376053b3d9",
          "code": "DTXSID0020319",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID0020319",
          "code_system": "EPA CompTox",
          "references": [
            "17a9b679-de09-cfef-03e1-7ab2b5feaef0"
          ]
        },
        {
          "uuid": "6034e3f9-9344-4fc6-81b6-58eff3ad13d1",
          "code": "J718M71A7A",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "77fe12d2-5d74-f10d-172f-74832bc651a2",
          "code": "3639",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:3639",
          "code_system": "CHEBI",
          "references": [
            "3f66d581-85fc-e159-1e95-95912d1832d4"
          ]
        },
        {
          "uuid": "8209ee86-6080-a37e-7a92-d67a0c943dd0",
          "code": "100000141987",
          "type": "PRIMARY",
          "code_system": "SMS_ID",
          "references": [
            "4d9e6e66-3266-990b-ec10-6bcd3a1aaf25"
          ]
        },
        {
          "uuid": "7aec43d2-4f86-fd51-6b05-e13cad684d3d",
          "code": "chlorothalonil",
          "type": "PRIMARY",
          "url": "https://pesticidecompendium.bcpc.org/chlorothalonil.html",
          "code_system": "ALANWOOD",
          "references": [
            "dbbcd01a-ccd3-6207-4408-cb21e5cc3f41"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "f1fe1c7b-1890-4470-92f2-5bcf69452405",
          "type": "ACTIVE MOIETY",
          "related_substance": {
            "uuid": "24f72ff9-9ee4-4b29-ad5c-d48ed2ca78ec",
            "refuuid": "def27215-8c15-486a-ac9b-dbfab63f473f",
            "name": "CHLOROTHALONIL",
            "unii": "J718M71A7A",
            "linking_id": "J718M71A7A",
            "ref_pname": "CHLOROTHALONIL",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "a471b70d-e124-4601-a079-1e3bfbd9be51",
          "name": "2,4,5,6-TETRACHLORO-1,3-BENZENEDICARBONITRILE",
          "stdName": "2,4,5,6-TETRACHLORO-1,3-BENZENEDICARBONITRILE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "4d0b2717-d68c-4270-9e61-3e72f7358f16",
          "name": "BRAVO",
          "stdName": "BRAVO",
          "type": "bn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "d0eee12e-6a41-4659-b2ee-dd06599ea4fd",
          "name": "CHLOROTHALONIL",
          "stdName": "CHLOROTHALONIL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "fb0bf0f9-0e8d-41e0-847d-b5ca9975522f",
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "2c3927f9-3876-477f-9328-75197dcda6ba",
            "8cdd8b69-6d10-4b83-9895-05ab02e6e96d",
            "5f1c36d5-5cfa-4c65-b7c5-359ee92ea591",
            "d69ed69b-b92e-44a3-8995-9d5dd811674b",
            "35807eb9-7ac6-4bca-9f9f-1fa47e4e8ffc",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": true
        },
        {
          "uuid": "e2c947af-2b79-4932-ab81-f7dd970a936d",
          "name": "CHLOROTHALONIL [HSDB]",
          "stdName": "CHLOROTHALONIL [HSDB]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "d69ed69b-b92e-44a3-8995-9d5dd811674b",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "ae33d6b4-93c0-1e0e-c51a-ab7c68b5ec65",
          "name": "CHLOROTHALONIL [IARC]",
          "stdName": "CHLOROTHALONIL [IARC]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5df7f0dc-b8ca-e247-4732-b1d0a5b97489"
          ],
          "display_name": false
        },
        {
          "uuid": "26ef1c60-9a68-492b-a63f-553a84279270",
          "name": "CHLOROTHALONIL [ISO]",
          "stdName": "CHLOROTHALONIL [ISO]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "fb0bf0f9-0e8d-41e0-847d-b5ca9975522f",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "7bd083b8-1a67-404a-89bd-b329385067a9",
          "name": "CHLOROTHALONIL [MI]",
          "stdName": "CHLOROTHALONIL [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2c3927f9-3876-477f-9328-75197dcda6ba",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "aa6167fd-5acd-4243-9c97-2b1a4516e90e",
          "name": "DAC-2787",
          "stdName": "DAC-2787",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "6c830e9d-6b41-4a8c-b06a-dc6866f0f9a7",
          "name": "DACONIL",
          "stdName": "DACONIL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "e4748e64-80f8-40dd-8327-b918eedb4d0c",
          "name": "DACONIL 2787",
          "stdName": "DACONIL 2787",
          "type": "bn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        },
        {
          "uuid": "747b6612-1a99-4232-8964-a27f92eb45e2",
          "name": "M-TETRACHLOROPHTHALODINITRILE",
          "stdName": "M-TETRACHLOROPHTHALODINITRILE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
            "6687c3e0-74f4-47ed-b853-cc42961e4800"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
          "citation": "MERCK",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "6687c3e0-74f4-47ed-b853-cc42961e4800",
          "citation": "MERCK INDEX",
          "doc_type": "MERCK INDEX",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2c3927f9-3876-477f-9328-75197dcda6ba",
          "citation": "MERCK INDEX",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "d69ed69b-b92e-44a3-8995-9d5dd811674b",
          "citation": "HSDB",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "fb0bf0f9-0e8d-41e0-847d-b5ca9975522f",
          "citation": "ISO",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5619b2a8-182b-4a61-879e-fde4e9f46de2",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391085000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "c0ee40c5-40fb-400d-be9b-487440dd3aa9",
          "citation": "SRS import [J718M71A7A]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=J718M71A7A",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391085000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8cdd8b69-6d10-4b83-9895-05ab02e6e96d",
          "citation": "CHLOROTHALONIL [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "35807eb9-7ac6-4bca-9f9f-1fa47e4e8ffc",
          "citation": "CHLOROTHALONIL [HSDB]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "5f1c36d5-5cfa-4c65-b7c5-359ee92ea591",
          "citation": "CHLOROTHALONIL [ISO]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "4cc8e3f9-87de-ade8-cf92-55a305c99ed1",
          "citation": "WEBSITE",
          "url": "https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+1897-45-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "17a9b679-de09-cfef-03e1-7ab2b5feaef0",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=1897-45-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "5df7f0dc-b8ca-e247-4732-b1d0a5b97489",
          "citation": "IARC",
          "doc_type": "IARC",
          "public_domain": true
        },
        {
          "uuid": "dbbcd01a-ccd3-6207-4408-cb21e5cc3f41",
          "citation": "AW",
          "doc_type": "ALANWOOD",
          "public_domain": true
        },
        {
          "uuid": "175a3d16-95dd-4149-b35a-3cd4344f48a6",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "3f66d581-85fc-e159-1e95-95912d1832d4",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "4d9e6e66-3266-990b-ec10-6bcd3a1aaf25",
          "citation": "EU-SRS",
          "doc_type": "EMA LIST",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "6b28a0d3-31b8-432f-9848-e5fe721ed74d",
          "id": "6b28a0d3-31b8-432f-9848-e5fe721ed74d",
          "molfile": "\n  Marvin  01132105342D          \n\n 14 14  0  0  0  0            999 V2000\n    0.2525  -13.1014    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    0.9630  -12.6981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -13.1014    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -13.9161    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    2.3918  -12.6981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1023  -13.1014    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8050  -13.5074    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    2.3918  -11.8548    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1023  -11.4540    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -11.4540    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -10.6290    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6579   -9.8066    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.9630  -11.8548    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.2525  -11.4540    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  1  0  0  0  0\n 13  2  2  0  0  0  0\n  4  3  1  0  0  0  0\n  3  5  2  0  0  0  0\n  6  5  1  0  0  0  0\n  8  5  1  0  0  0  0\n  7  6  3  0  0  0  0\n  9  8  1  0  0  0  0\n 10  8  2  0  0  0  0\n 11 10  1  0  0  0  0\n 13 10  1  0  0  0  0\n 12 11  3  0  0  0  0\n 14 13  1  0  0  0  0\nM  END",
          "smiles": "C(#N)c1c(c(C#N)c(c(c1Cl)Cl)Cl)Cl",
          "formula": "C8Cl4N2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "641cb394-45a1-4c23-b743-becf92b2978e"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "265.911",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "def27215-8c15-486a-ac9b-dbfab63f473f",
      "version": "9",
      "structure": {
        "id": "261f7375-0daf-4421-8f11-34e6e77d97b5",
        "molfile": "\n  Marvin  01132102062D          \n\n 14 14  0  0  0  0            999 V2000\n    2.3918  -12.6981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -11.4540    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.3918  -11.8548    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.9630  -12.6981    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.9630  -11.8548    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -13.1014    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -10.6290    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1023  -13.1014    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.6579   -9.8066    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8050  -13.5074    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.2525  -13.1014    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    3.1023  -11.4540    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    1.6604  -13.9161    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    0.2525  -11.4540    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n  2  3  2  0  0  0  0\n  3  1  1  0  0  0  0\n  4  6  1  0  0  0  0\n  5  4  2  0  0  0  0\n  6  1  2  0  0  0  0\n  7  2  1  0  0  0  0\n  8  1  1  0  0  0  0\n  9  7  3  0  0  0  0\n 10  8  3  0  0  0  0\n 11  4  1  0  0  0  0\n 12  3  1  0  0  0  0\n 13  6  1  0  0  0  0\n 14  5  1  0  0  0  0\n  5  2  1  0  0  0  0\nM  END",
        "smiles": "C(#N)c1c(c(C#N)c(c(c1Cl)Cl)Cl)Cl",
        "formula": "C8Cl4N2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "265.911",
        "optical_activity": "NONE",
        "references": [
          "25f9d5de-1ecf-4b05-80a6-aef5163a5997",
          "c0ee40c5-40fb-400d-be9b-487440dd3aa9"
        ],
        "stereo_centers": 0
      },
      "unii": "J718M71A7A"
    }
  ]
}