{
  "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": "ebaebfdb-2e69-4dc5-9a50-608c6c636308",
          "code": "7251-61-8",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=7251-61-8",
          "code_system": "CAS",
          "references": [
            "f534b7ff-59b6-48f0-821c-8919f92a2a41",
            "4d5048a9-7540-4aa2-b2d0-fcb731784882"
          ]
        },
        {
          "uuid": "34b02935-bab0-418e-b4a3-a32b66120bdc",
          "code": "C052307",
          "type": "PRIMARY",
          "url": "http://www.ncbi.nlm.nih.gov/mesh/67052307",
          "code_system": "MESH",
          "references": [
            "f534b7ff-59b6-48f0-821c-8919f92a2a41"
          ]
        },
        {
          "uuid": "a1286add-2a0c-42c4-9836-da9c36122aac",
          "code": "230-664-9",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.027.877",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "f534b7ff-59b6-48f0-821c-8919f92a2a41"
          ]
        },
        {
          "uuid": "7f121cef-b81a-40e1-abb0-c4386ad76cbc",
          "code": "23686",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/23686",
          "code_system": "PUBCHEM",
          "references": [
            "f534b7ff-59b6-48f0-821c-8919f92a2a41"
          ]
        },
        {
          "uuid": "51f69d58-67df-8422-e5f2-148631cec9d6",
          "code": "DTXSID50222831",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID50222831",
          "code_system": "EPA CompTox",
          "references": [
            "e34c5a34-1d46-8f57-5a8f-b5d26103c82c"
          ]
        },
        {
          "uuid": "4b392e4d-ce06-432a-8249-88396529fd70",
          "code": "03VU31MV6J",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "94617e2b-5366-2188-ae6a-11ad936054fa",
          "code": "132812",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:132812",
          "code_system": "CHEBI",
          "references": [
            "1967a39d-f4ff-d6a6-69c0-a5f9a9725c33"
          ]
        },
        {
          "uuid": "d64d9f49-6c19-820d-8e8f-97c85485ffd9",
          "code": "65587",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=65587",
          "code_system": "NSC",
          "references": [
            "8b893481-c628-2f48-88f4-4a02e4900893"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "62f7f2c5-8939-41b3-a296-4d5e0ff6cc3e",
          "name": "2-METHYLQUINOXALINE",
          "stdName": "2-METHYLQUINOXALINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e7a7301-00f0-4001-974e-f3b6a85c39b8"
          ],
          "display_name": true
        },
        {
          "uuid": "3970c7fe-a76f-4e2d-9f16-f5cffd808633",
          "name": "NSC-65587",
          "stdName": "NSC-65587",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e7a7301-00f0-4001-974e-f3b6a85c39b8",
            "8d22e67e-2078-4cbd-ab08-d8c0fc29c80c"
          ],
          "display_name": false
        },
        {
          "uuid": "e6fd631a-700a-4984-a428-1423d69a44e4",
          "name": "QUINOXALINE, 2-METHYL-",
          "stdName": "QUINOXALINE, 2-METHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e7a7301-00f0-4001-974e-f3b6a85c39b8",
            "8d22e67e-2078-4cbd-ab08-d8c0fc29c80c"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "3e7a7301-00f0-4001-974e-f3b6a85c39b8",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "8d22e67e-2078-4cbd-ab08-d8c0fc29c80c",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "f534b7ff-59b6-48f0-821c-8919f92a2a41",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391847000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "fe3ac5ca-c5c1-4109-a4d6-2d54e4a8a96a",
          "citation": "SRS import [03VU31MV6J]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=03VU31MV6J",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391847000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "9821ff5e-5d78-4f91-b6ae-ebe97f50eef9",
          "citation": "CHEMID  2011",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "e34c5a34-1d46-8f57-5a8f-b5d26103c82c",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=7251-61-8",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "4d5048a9-7540-4aa2-b2d0-fcb731784882",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "1967a39d-f4ff-d6a6-69c0-a5f9a9725c33",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "8b893481-c628-2f48-88f4-4a02e4900893",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "3225120f-4ffa-43be-9955-9ea1ebe18497",
          "id": "3225120f-4ffa-43be-9955-9ea1ebe18497",
          "molfile": "\n  Marvin  01132102412D          \n\n 11 12  0  0  0  0            999 V2000\n    8.4425   -4.2996    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7838   -4.6716    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7838   -5.4964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.0589   -5.9096    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    6.3354   -5.4964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.6213   -5.9096    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8901   -5.4964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8901   -4.6716    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.6213   -4.2570    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.3354   -4.6716    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.0589   -4.2570    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  2  3  1  0  0  0  0\n 11  2  2  0  0  0  0\n  4  3  2  0  0  0  0\n  5  4  1  0  0  0  0\n  5  6  1  0  0  0  0\n 10  5  2  0  0  0  0\n  6  7  2  0  0  0  0\n  8  7  1  0  0  0  0\n  9  8  2  0  0  0  0\n 10  9  1  0  0  0  0\n 10 11  1  0  0  0  0\nM  END",
          "smiles": "Cc1cnc2ccccc2n1",
          "formula": "C9H8N2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "26460058-2c2f-4e3e-bd4d-8a1a80486673"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "144.1736",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "1b5c119a-67cf-46c0-9972-b3450c5484c5",
      "version": "5",
      "structure": {
        "id": "ac793f47-2e7d-4cff-8fee-f52f06c6bafc",
        "molfile": "\n  Marvin  01132108572D          \n\n 11 12  0  0  0  0            999 V2000\n    6.3354   -4.6716    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.3354   -5.4964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.0589   -5.9096    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7838   -5.4964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7838   -4.6716    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.0589   -4.2570    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    8.4425   -4.2996    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.6213   -5.9096    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8901   -5.4964    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8901   -4.6716    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.6213   -4.2570    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  2  0  0  0  0\n  3  4  1  0  0  0  0\n  5  4  2  0  0  0  0\n  6  5  1  0  0  0  0\n  1  6  2  0  0  0  0\n  5  7  1  0  0  0  0\n  2  8  1  0  0  0  0\n  8  9  2  0  0  0  0\n 10  9  1  0  0  0  0\n 11 10  2  0  0  0  0\n  1 11  1  0  0  0  0\nM  END",
        "smiles": "Cc1cnc2ccccc2n1",
        "formula": "C9H8N2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "144.1736",
        "optical_activity": "NONE",
        "references": [
          "9821ff5e-5d78-4f91-b6ae-ebe97f50eef9",
          "fe3ac5ca-c5c1-4109-a4d6-2d54e4a8a96a"
        ],
        "stereo_centers": 0
      },
      "unii": "03VU31MV6J"
    }
  ]
}