{
  "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": "6c5de1e6-79f3-449f-a61a-48884775cbf5",
          "code": "74336-59-7",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=74336-59-7",
          "code_system": "CAS",
          "references": [
            "dc05b0eb-7600-4c91-bf25-8a3df9188601",
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ]
        },
        {
          "uuid": "7a0ff359-d7f7-4e5d-870a-5dded6fb717e",
          "code": "277-823-9",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.070.727",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "dc05b0eb-7600-4c91-bf25-8a3df9188601"
          ]
        },
        {
          "uuid": "08c20365-16eb-45a8-806c-1fb882b447a0",
          "code": "QJ5UD753RR",
          "type": "PRIMARY",
          "code_system": "FDA UNII",
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ]
        },
        {
          "uuid": "1e27f375-7792-00d6-118d-f45abf2d056f",
          "code": "DTXSID30888434",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID30888434",
          "code_system": "EPA CompTox",
          "references": [
            "4dbd2887-1cb5-c4a5-507f-ec9e5622e13c"
          ]
        },
        {
          "uuid": "11d400c7-e66a-2245-ec11-52607f746c58",
          "code": "166442",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/166442",
          "code_system": "PUBCHEM",
          "references": [
            "a1046002-4350-1522-ac04-0fdfa17833e8"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "8289f071-6ca4-467c-a2c3-3fe9924436ee",
          "name": "3-[(4-Chloro-2-nitrophenyl)azo]-2-methylpyrazolo[5,1-b]quinazolin-9(1H)-one",
          "stdName": "3-((4-CHLORO-2-NITROPHENYL)AZO)-2-METHYLPYRAZOLO(5,1-B)QUINAZOLIN-9(1H)-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": true
        },
        {
          "uuid": "8bf5bf4c-c9d8-4b5d-b491-0b4a29fcacdf",
          "name": "3-[(4-chloro-2-nitrophenyl)diazenyl]-2-methyl-1h-pyrazolo[5,1-b]quinazolin-9-one",
          "stdName": "3-((4-CHLORO-2-NITROPHENYL)DIAZENYL)-2-METHYL-1H-PYRAZOLO(5,1-B)QUINAZOLIN-9-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "fb85d194-a15e-476b-8e4d-2912a48b5cee",
          "name": "3-[2-(4-Chloro-2-nitrophenyl)diazenyl]-2-methylpyrazolo[5,1-b]quinazolin-9(1H)-one",
          "stdName": "3-(2-(4-CHLORO-2-NITROPHENYL)DIAZENYL)-2-METHYLPYRAZOLO(5,1-B)QUINAZOLIN-9(1H)-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "b94f09f5-4c7c-4e9e-ba4e-c068965b2c9c",
          "name": "C.I. 12915",
          "stdName": "C.I. 12915",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "a587d5da-e4da-472d-b5ef-13288736099e",
          "name": "C.I. Pigment Orange 67",
          "stdName": "C.I. PIGMENT ORANGE 67",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "2ca85a20-19c3-42c4-98d0-867e2ea4184b",
          "name": "PO-67",
          "stdName": "PO-67",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "ad0f4907-69f9-4436-9783-aec57913bded",
          "name": "Paliotol Orange L-2930HD",
          "stdName": "PALIOTOL ORANGE L-2930HD",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "0bc246f4-0a7e-4ee9-9238-f588167aa47b",
          "name": "Pigment Orange 67",
          "stdName": "PIGMENT ORANGE 67",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        },
        {
          "uuid": "d3b28bf9-6043-4a45-a029-f45bdfc0a7b4",
          "name": "Pyrazolo[5,1-b]quinazolin-9(1H)-one, 3-[(4-chloro-2-nitrophenyl)azo]-2-methyl-",
          "stdName": "PYRAZOLO(5,1-B)QUINAZOLIN-9(1H)-ONE, 3-((4-CHLORO-2-NITROPHENYL)AZO)-2-METHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3837dcb5-1174-421f-ab89-3f619482514b"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "401377ea-2a35-48f4-95d3-5b191362dd25",
          "citation": "CFSAN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "dc05b0eb-7600-4c91-bf25-8a3df9188601",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493392079000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3837dcb5-1174-421f-ab89-3f619482514b",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "4dbd2887-1cb5-c4a5-507f-ec9e5622e13c",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        },
        {
          "uuid": "a1046002-4350-1522-ac04-0fdfa17833e8",
          "citation": "PUBCHEM",
          "doc_type": "PUBCHEM",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "23c2fced-0569-4afe-a53c-686497416bf6",
          "id": "23c2fced-0569-4afe-a53c-686497416bf6",
          "molfile": "\n  Marvin  04022316582D          \n\n 27 30  0  0  0  0            999 V2000\n   13.2654   -4.0447    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   13.9799   -3.6322    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    9.8862   -2.9130    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   13.0777   -2.2597    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.4088   -2.8072    0.0000 N   0  3  0  0  0  0  0  0  0  0  0  0\n   14.6943   -2.3947    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   16.1233   -2.3947    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n   16.8377   -5.2822    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n   11.7972   -3.9677    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.2452   -3.3547    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   12.5509   -3.6322    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.5423   -4.7524    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   10.4382   -3.5262    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.6576   -2.6402    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   12.4646   -2.8117    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.7353   -4.9239    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.1833   -4.3108    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.4804   -5.7085    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.3763   -4.4823    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6735   -5.8800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1214   -5.2669    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.6943   -4.0447    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.4088   -3.6322    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.6943   -4.8697    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.1233   -4.0447    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.4088   -5.2822    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.1233   -4.8697    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  3  0  0  0\n  1 11  1  0  0  0  0\n  2 22  1  0  0  0  0\n  3 13  2  0  0  0  0\n  4 15  1  0  0  0  0\n  5  6  2  0  0  0  0\n  5  7  1  0  0  0  0\n  5 23  1  0  0  0  0\n  8 27  1  0  0  0  0\n  9 10  1  0  0  0  0\n  9 11  1  0  0  0  0\n  9 12  2  0  0  0  0\n 10 13  1  0  0  0  0\n 10 14  1  0  0  0  0\n 11 15  2  0  0  0  0\n 12 16  1  0  0  0  0\n 13 17  1  0  0  0  0\n 14 15  1  0  0  0  0\n 16 17  1  0  0  0  0\n 16 18  2  0  0  0  0\n 17 19  2  0  0  0  0\n 18 20  1  0  0  0  0\n 19 21  1  0  0  0  0\n 20 21  2  0  0  0  0\n 22 23  2  0  0  0  0\n 22 24  1  0  0  0  0\n 23 25  1  0  0  0  0\n 24 26  2  0  0  0  0\n 25 27  2  0  0  0  0\n 26 27  1  0  0  0  0\nM  CHG  2   5   1   7  -1\nM  END",
          "smiles": "Cc1c(c2nc3ccccc3c(=O)n2[nH]1)N=Nc4ccc(cc4[N+](=O)[O-])Cl",
          "formula": "C17H11ClN6O3",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "97015d9d-28db-4292-ab82-4a4fb789ea9c"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "382.7612",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "903d3e98-c364-46d0-87b6-a01b82c0a73e",
      "version": "9",
      "structure": {
        "id": "74ea0520-bc2a-4348-ba2d-8d35f7a4d3dc",
        "molfile": "3-[2-(4-Chloro-2-nitrophenyl)diazenyl]-2-methylpyrazolo[5,1-b]quinazolin-9(1H...\n   JSDraw204022316582D\n\n 27 30  0  0  0  0              0 V2000\n   25.0846   -7.6484    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   26.4356   -6.8684    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   18.6946   -5.5084    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   24.7296   -4.2730    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   29.1376   -5.3084    0.0000 N   0  3  0  0  0  0  5  0  0  0  0  0\n   27.7866   -4.5284    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   30.4887   -4.5284    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n   31.8397   -9.9885    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n   22.3083   -7.5029    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.2643   -6.3436    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   23.7334   -6.8684    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.8262   -8.9866    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   19.7384   -6.6679    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.0443   -4.9926    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   23.5703   -5.3169    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.3002   -9.3109    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   19.2564   -8.1517    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   19.8181  -10.7947    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.7304   -8.4760    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   18.2923  -11.1190    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.2483   -9.9596    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.7866   -7.6484    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   29.1376   -6.8684    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.7866   -9.2085    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   30.4887   -7.6484    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   29.1376   -9.9885    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   30.4887   -9.2085    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  3  0  0  0\n  1 11  1  0  0  0  0\n  2 22  1  0  0  0  0\n  3 13  2  0  0  0  0\n  4 15  1  0  0  0  0\n  5  6  2  0  0  0  0\n  5  7  1  0  0  0  0\n  5 23  1  0  0  0  0\n  8 27  1  0  0  0  0\n  9 10  1  0  0  0  0\n  9 11  1  0  0  0  0\n  9 12  2  0  0  0  0\n 10 13  1  0  0  0  0\n 10 14  1  0  0  0  0\n 11 15  2  0  0  0  0\n 12 16  1  0  0  0  0\n 13 17  1  0  0  0  0\n 14 15  1  0  0  0  0\n 16 17  1  0  0  0  0\n 16 18  2  0  0  0  0\n 17 19  2  0  0  0  0\n 18 20  1  0  0  0  0\n 19 21  1  0  0  0  0\n 20 21  2  0  0  0  0\n 22 23  2  0  0  0  0\n 22 24  1  0  0  0  0\n 23 25  1  0  0  0  0\n 24 26  2  0  0  0  0\n 25 27  2  0  0  0  0\n 26 27  1  0  0  0  0\nM  CHG  2   5   1   7  -1\nM  END",
        "smiles": "Cc1c(c2nc3ccccc3c(=O)n2[nH]1)N=Nc4ccc(cc4[N+](=O)[O-])Cl",
        "formula": "C17H11ClN6O3",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "382.7612",
        "optical_activity": "NONE",
        "references": [
          "401377ea-2a35-48f4-95d3-5b191362dd25",
          "3837dcb5-1174-421f-ab89-3f619482514b"
        ],
        "stereo_centers": 0
      },
      "unii": "QJ5UD753RR"
    }
  ]
}