{
  "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": "5815ac74-3bda-4ecc-6349-c7f67de6c890",
          "code": "lenacil",
          "type": "PRIMARY",
          "url": "https://pesticidecompendium.bcpc.org/lenacil.html",
          "code_system": "ALANWOOD",
          "references": [
            "734fd0a8-053e-3625-cf55-9a4774c8d88c"
          ]
        },
        {
          "uuid": "fcd666b8-ad46-4a69-a798-2bcb99c408c8",
          "code": "2164-08-1",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=2164-08-1",
          "code_system": "CAS",
          "references": [
            "b3abdcc3-8b1e-4cc9-a7b3-c8d659e1dd56",
            "ed9512e8-44a5-4053-990e-349f6874c162"
          ]
        },
        {
          "uuid": "b6033eee-80ca-4ae5-8c56-47e40b1e55c8",
          "code": "525200",
          "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:2682",
          "code_system": "EPA PESTICIDE CODE",
          "references": [
            "b3abdcc3-8b1e-4cc9-a7b3-c8d659e1dd56"
          ]
        },
        {
          "uuid": "ef5eb613-3f05-4159-9a01-856e03f12d65",
          "code": "218-499-0",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.016.818",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "b3abdcc3-8b1e-4cc9-a7b3-c8d659e1dd56"
          ]
        },
        {
          "uuid": "fd78ee64-f5a7-432f-859d-14888bc16c6f",
          "code": "m6759",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m6759?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "b3abdcc3-8b1e-4cc9-a7b3-c8d659e1dd56"
          ]
        },
        {
          "uuid": "b20c38a8-29ee-4289-ba58-1db0be0516b5",
          "code": "16559",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/16559",
          "code_system": "PUBCHEM",
          "references": [
            "b3abdcc3-8b1e-4cc9-a7b3-c8d659e1dd56"
          ]
        },
        {
          "uuid": "fa83ba10-1be2-e87d-e214-c5a49f8197ff",
          "code": "DTXSID9042093",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID9042093",
          "code_system": "EPA CompTox",
          "references": [
            "934409c5-9685-5586-33e3-a8f7124bfb18"
          ]
        },
        {
          "uuid": "906ed694-e9f4-4db9-aa20-71c01df53882",
          "code": "X58DK6S8KX",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "eb590dda-a909-8c9a-b52a-79d18f987cf2",
          "code": "6407",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:6407",
          "code_system": "CHEBI",
          "references": [
            "86c375b3-eb65-d1fe-b50b-062636eb2368"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "1a7732ab-f1e0-4a6b-b7d6-e4e6db278067",
          "name": "3-CYCLOHEXYL-1,5,6,7-TETRAHYDRO-2H-CYCLOPENTAPYRIMIDINE-2,4(3H)-DIONE",
          "stdName": "3-CYCLOHEXYL-1,5,6,7-TETRAHYDRO-2H-CYCLOPENTAPYRIMIDINE-2,4(3H)-DIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "c2f6bca6-9644-43a2-b0fe-4e38e6ece396"
          ],
          "display_name": false
        },
        {
          "uuid": "65e71539-1ec8-4449-a487-08277dcbaa40",
          "name": "3-CYCLOHEXYL-5,6-TRIMETHYLENEURACIL",
          "stdName": "3-CYCLOHEXYL-5,6-TRIMETHYLENEURACIL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "c2f6bca6-9644-43a2-b0fe-4e38e6ece396"
          ],
          "display_name": false
        },
        {
          "uuid": "e5424332-0ccf-4c80-9eda-553293772def",
          "name": "3-CYCLOHEXYL-6,7-DIHYDRO-1H-CYCLOPENTAPYRIMIDINE-2,4-(3H,5H)-DIONE",
          "stdName": "3-CYCLOHEXYL-6,7-DIHYDRO-1H-CYCLOPENTAPYRIMIDINE-2,4-(3H,5H)-DIONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "c2f6bca6-9644-43a2-b0fe-4e38e6ece396"
          ],
          "display_name": false
        },
        {
          "uuid": "2ffd1eab-7be2-4ef3-acf9-bffe56ffe0a9",
          "name": "DU PONT 634",
          "stdName": "DU PONT 634",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "c2f6bca6-9644-43a2-b0fe-4e38e6ece396"
          ],
          "display_name": false
        },
        {
          "uuid": "baac258f-6645-46b0-9176-7b2b1bf5b9fa",
          "name": "LENACIL",
          "stdName": "LENACIL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "f2165fb5-be9f-4b9d-be21-e82c04ffeeb7",
            "db720daf-0653-444f-a909-cb4931fa1cbe",
            "68288b4a-cf1b-43f2-a445-519b6948164e",
            "5c0ac902-8bb3-4c6a-b442-73a28f33af5a",
            "e0712cd6-05ee-419b-adc6-2184a3fbf612"
          ],
          "display_name": true
        },
        {
          "uuid": "231c20e1-4a63-48e4-9bd4-c5d04144ff9c",
          "name": "LENACIL [ISO]",
          "stdName": "LENACIL [ISO]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "68288b4a-cf1b-43f2-a445-519b6948164e"
          ],
          "display_name": false
        },
        {
          "uuid": "68930844-7c68-4506-80be-8b93c92c528c",
          "name": "LENACIL [MI]",
          "stdName": "LENACIL [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "e0712cd6-05ee-419b-adc6-2184a3fbf612"
          ],
          "display_name": false
        },
        {
          "uuid": "890faf02-bf84-4262-83f8-14183934480a",
          "name": "VENZAR",
          "stdName": "VENZAR",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "258522a0-0f9f-4859-b7db-44cec270b62c",
            "60e37cd3-365d-409b-975c-d3c31f0b8f29"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "db720daf-0653-444f-a909-cb4931fa1cbe",
          "citation": "ICSAS BATCH 2010",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "e0712cd6-05ee-419b-adc6-2184a3fbf612",
          "citation": "MERCK INDEX",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "258522a0-0f9f-4859-b7db-44cec270b62c",
          "citation": "MERCK INDEX",
          "doc_type": "MERCK INDEX",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "c2f6bca6-9644-43a2-b0fe-4e38e6ece396",
          "citation": "Merck",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "60e37cd3-365d-409b-975c-d3c31f0b8f29",
          "citation": "MERCK",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "68288b4a-cf1b-43f2-a445-519b6948164e",
          "citation": "ISO",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b3abdcc3-8b1e-4cc9-a7b3-c8d659e1dd56",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390897000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4788b88e-8fe9-4511-85fe-f5053ab74c7e",
          "citation": "SRS import [X58DK6S8KX]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=X58DK6S8KX",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390897000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "fc0ee443-7d15-44c6-a4d1-5f86807a4704",
          "citation": "CHEMID 2010",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "f2165fb5-be9f-4b9d-be21-e82c04ffeeb7",
          "citation": "LENACIL [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "5c0ac902-8bb3-4c6a-b442-73a28f33af5a",
          "citation": "LENACIL [ISO]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "934409c5-9685-5586-33e3-a8f7124bfb18",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=2164-08-1",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "734fd0a8-053e-3625-cf55-9a4774c8d88c",
          "citation": "AW",
          "doc_type": "ALANWOOD",
          "public_domain": true
        },
        {
          "uuid": "ed9512e8-44a5-4053-990e-349f6874c162",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "86c375b3-eb65-d1fe-b50b-062636eb2368",
          "doc_type": "SYSTEM",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "a2f567b4-4813-41a4-b040-e38ca6503981",
          "id": "a2f567b4-4813-41a4-b040-e38ca6503981",
          "molfile": "\n  Marvin  01132108282D          \n\n 17 19  0  0  0  0            999 V2000\n    6.9431   -6.7216    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5306   -6.0072    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7055   -6.0072    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    5.2930   -5.2927    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.4861   -5.1212    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.3998   -4.3008    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.1535   -3.9652    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7055   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5306   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9431   -3.8638    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9431   -5.2927    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7680   -5.2927    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.1805   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0055   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.4180   -5.2927    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0055   -6.0072    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.1805   -6.0072    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  2  0  0  0  0\n  2  3  1  0  0  0  0\n 11  2  1  0  0  0  0\n  3  4  1  0  0  0  0\n  5  4  1  0  0  0  0\n  4  8  2  0  0  0  0\n  6  5  1  0  0  0  0\n  7  6  1  0  0  0  0\n  8  7  1  0  0  0  0\n  8  9  1  0  0  0  0\n  9 10  2  0  0  0  0\n  9 11  1  0  0  0  0\n 11 12  1  0  0  0  0\n 12 13  1  0  0  0  0\n 17 12  1  0  0  0  0\n 13 14  1  0  0  0  0\n 14 15  1  0  0  0  0\n 15 16  1  0  0  0  0\n 16 17  1  0  0  0  0\nM  END",
          "smiles": "C1CCC(CC1)n2c(=O)c3CCCc3[nH]c2=O",
          "formula": "C13H18N2O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "3e608511-3003-4299-9516-60b49aaf2709"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "234.2947",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "88e6d7c0-8128-4a61-9140-ab6d4a80247d",
      "version": "5",
      "structure": {
        "id": "dde49c2d-f3c5-46cd-93a4-243851c9a8de",
        "molfile": "\n  Marvin  01132111302D          \n\n 17 19  0  0  0  0            999 V2000\n    6.5306   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7055   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.2930   -5.2927    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7055   -6.0072    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5306   -6.0072    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9431   -5.2927    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7680   -5.2927    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.1805   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0055   -4.5783    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.4180   -5.2927    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0055   -6.0072    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.1805   -6.0072    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9431   -6.7216    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    4.4861   -5.1212    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.3998   -4.3008    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.1535   -3.9652    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9431   -3.8638    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  3  2  2  0  0  0  0\n  4  3  1  0  0  0  0\n  5  4  1  0  0  0  0\n  6  5  1  0  0  0  0\n  1  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  7  8  1  0  0  0  0\n  8  9  1  0  0  0  0\n  9 10  1  0  0  0  0\n 10 11  1  0  0  0  0\n 11 12  1  0  0  0  0\n 12  7  1  0  0  0  0\n  5 13  2  0  0  0  0\n 14  3  1  0  0  0  0\n 15 14  1  0  0  0  0\n 16 15  1  0  0  0  0\n  2 16  1  0  0  0  0\n  1 17  2  0  0  0  0\nM  END",
        "smiles": "C1CCC(CC1)n2c(=O)c3CCCc3[nH]c2=O",
        "formula": "C13H18N2O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "234.2947",
        "optical_activity": "NONE",
        "references": [
          "fc0ee443-7d15-44c6-a4d1-5f86807a4704",
          "4788b88e-8fe9-4511-85fe-f5053ab74c7e"
        ],
        "stereo_centers": 0
      },
      "unii": "X58DK6S8KX"
    }
  ]
}