{
  "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": "41f16136-cdcc-44ff-9f2e-d76dad1b2875",
          "code": "3118-97-6",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=3118-97-6",
          "code_system": "CAS",
          "references": [
            "54c813ba-097b-49ee-9e14-ce62b9dca66d",
            "7eb375c7-65b6-4ed2-bebb-e40056d5a50f"
          ]
        },
        {
          "uuid": "79fbb9f2-e1be-4dcf-8bb3-298fa1e2c85e",
          "code": "SUDAN II",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Sudan_II",
          "code_system": "WIKIPEDIA",
          "references": [
            "54c813ba-097b-49ee-9e14-ce62b9dca66d"
          ]
        },
        {
          "uuid": "b6c839fe-3159-4087-95e1-3a426d509846",
          "code": "221-490-4",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.019.537",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "54c813ba-097b-49ee-9e14-ce62b9dca66d"
          ]
        },
        {
          "uuid": "5ff6c243-057e-4b0d-b5cb-0d7d302c01c3",
          "code": "1648696",
          "comments": "RxNorm",
          "type": "PRIMARY",
          "url": "https://rxnav.nlm.nih.gov/REST/rxcui/1648696/allProperties.xml?prop=all",
          "code_system": "RXCUI",
          "references": [
            "54c813ba-097b-49ee-9e14-ce62b9dca66d"
          ]
        },
        {
          "uuid": "54a2ab7c-9355-3ae6-88b1-1a352b386b5f",
          "code": "6365",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/source/hsdb/6365",
          "code_system": "HSDB",
          "references": [
            "f0abf9ad-2c8a-a742-b31d-3bff50ede90b"
          ]
        },
        {
          "uuid": "fabfdcbf-9e74-1db8-db45-6f5f88d0edc9",
          "code": "DTXSID5040706",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID5040706",
          "code_system": "EPA CompTox",
          "references": [
            "b279d310-fcfb-8a46-42f5-34e80964ba85"
          ]
        },
        {
          "uuid": "9b837be9-83e7-44db-9414-fa05dab1d984",
          "code": "8C1M5O3ECT",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "d2f6fb85-daae-b038-a57d-d3dc8537c3dc",
          "code": "10457",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=10457",
          "code_system": "NSC",
          "references": [
            "42d3966d-1197-5666-d634-8c181c701c6d"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "7b073b91-f70e-45a4-a47e-ef301a9b12b1",
          "name": "1-(2,4-DIMETHYLPHENYLAZO)-2-NAPHTHOL",
          "stdName": "1-(2,4-DIMETHYLPHENYLAZO)-2-NAPHTHOL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "70b0b3e4-770b-4449-ad2b-35543afc7b61",
          "name": "2-NAPHTHALENOL, 1-((2,4-DIMETHYLPHENYL)AZO)-",
          "stdName": "2-NAPHTHALENOL, 1-((2,4-DIMETHYLPHENYL)AZO)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "f0d1a284-3920-447f-94fb-900f10b01ea3",
          "name": "2-NAPHTHALENOL, 1-(2-(2,4-DIMETHYLPHENYL)DIAZENYL)-",
          "stdName": "2-NAPHTHALENOL, 1-(2-(2,4-DIMETHYLPHENYL)DIAZENYL)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "1c96efd9-e7ba-4257-be63-65be0dab98ec",
            "6e6f382a-98d8-4637-8366-cd004b14402d"
          ],
          "display_name": false
        },
        {
          "uuid": "798faa9b-fff4-480f-9ebb-a12adf56dddb",
          "name": "AKA505",
          "stdName": "AKA505",
          "type": "of",
          "languages": [
            "en"
          ],
          "preferred": true,
          "references": [
            "3ff828a8-9683-490c-9adc-83d3feb1c4a3",
            "d2b141b8-a0da-4bde-ad6a-1782510b6339",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false,
          "domains": [
            "cosmetic"
          ],
          "name_orgs": [
            {
              "uuid": "58890cc5-47e1-42e4-8d94-c80224c61009",
              "name_org": "INCI"
            }
          ]
        },
        {
          "uuid": "4076e38a-7d3e-4f4a-a104-aec4f0c6c5b7",
          "name": "C.I. SOLVENT ORANGE 7",
          "stdName": "C.I. SOLVENT ORANGE 7",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "11d47c51-6ff6-4019-a9b7-9e3f107e3446",
            "8fb0a3a9-001e-42a6-80b4-1f63f52d76c3",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "55e16a5d-bfcf-44e0-ac82-cfab9f008702",
          "name": "C.I. SOLVENT ORANGE 7 [HSDB]",
          "stdName": "C.I. SOLVENT ORANGE 7 [HSDB]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8fb0a3a9-001e-42a6-80b4-1f63f52d76c3",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "0b3700ae-c589-441d-abd4-f3ef6aeb7f69",
          "name": "CI 12140",
          "stdName": "CI 12140",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "9dd12792-09ef-46c0-86b9-b4b31f14c2e5",
          "name": "FD&C RED NO. 32 (DELISTED)",
          "stdName": "FD&C RED NO. 32 (DELISTED)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "522d9d48-93bc-43d7-9bd6-2a8c4ed877f6",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "3b4a9dee-dc6e-4fbd-a4db-631a9e4a77e3",
          "name": "NSC-10457",
          "stdName": "NSC-10457",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "104b366f-dfbe-4048-9203-a2cb51e843d9",
          "name": "SOLVENT ORANGE 7",
          "stdName": "SOLVENT ORANGE 7",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3ff828a8-9683-490c-9adc-83d3feb1c4a3",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "732dbf76-e15c-474b-afeb-9741334210b9",
          "name": "SUDAN II",
          "stdName": "SUDAN II",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": false
        },
        {
          "uuid": "6d97ff3e-4bd5-45da-8f9c-0308220fdf24",
          "name": "SUDAN II [IARC]",
          "stdName": "SUDAN II [IARC]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "24c8a71c-64f6-a5e7-fa4a-9555aab06a6b"
          ],
          "display_name": false
        },
        {
          "uuid": "0ef53841-d006-467a-8de1-36c46fc147a7",
          "name": "SUDAN RED",
          "stdName": "SUDAN RED",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6e6f382a-98d8-4637-8366-cd004b14402d",
            "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5"
          ],
          "display_name": true
        }
      ],
      "references": [
        {
          "uuid": "1c96efd9-e7ba-4257-be63-65be0dab98ec",
          "citation": "ACD 9.0(WEB PAGE)",
          "doc_type": "WEB PAGE",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "6e6f382a-98d8-4637-8366-cd004b14402d",
          "citation": "ChemID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "522d9d48-93bc-43d7-9bd6-2a8c4ed877f6",
          "citation": "CFR",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "eef198e9-87a0-4866-9a6a-4b5d3d2bf1c5",
          "citation": "CFR",
          "doc_type": "CFR",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3ff828a8-9683-490c-9adc-83d3feb1c4a3",
          "citation": "PCPC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8fb0a3a9-001e-42a6-80b4-1f63f52d76c3",
          "citation": "HSDB",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "54c813ba-097b-49ee-9e14-ce62b9dca66d",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390741000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "f2b53156-c337-4499-84de-4f64334b37f6",
          "citation": "SRS import [8C1M5O3ECT]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=8C1M5O3ECT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390741000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "d2b141b8-a0da-4bde-ad6a-1782510b6339",
          "citation": "AKA505 [INCI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "11d47c51-6ff6-4019-a9b7-9e3f107e3446",
          "citation": "C.I. SOLVENT ORANGE 7 [HSDB]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "f0abf9ad-2c8a-a742-b31d-3bff50ede90b",
          "citation": "WEBSITE",
          "url": "https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+3118-97-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "b279d310-fcfb-8a46-42f5-34e80964ba85",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=3118-97-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "24c8a71c-64f6-a5e7-fa4a-9555aab06a6b",
          "citation": "IARC",
          "doc_type": "IARC",
          "public_domain": true
        },
        {
          "uuid": "42d3966d-1197-5666-d634-8c181c701c6d",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "4338b707-e47f-fe29-28b5-a48240188551",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        },
        {
          "uuid": "7eb375c7-65b6-4ed2-bebb-e40056d5a50f",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "d3a7e197-faa0-4015-8e6a-570c1d73800b",
          "id": "d3a7e197-faa0-4015-8e6a-570c1d73800b",
          "molfile": "\n  Marvin  01132110572D          \n\n 21 23  0  0  0  0            999 V2000\n    1.5171   -2.3941    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.3401   -2.4068    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7368   -3.1187    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.5766   -3.1317    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.9918   -2.4199    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8241   -2.4310    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    5.2357   -1.7340    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0605   -1.7340    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4647   -2.4532    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0494   -3.1725    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.2970   -2.4606    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7196   -1.7543    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.3099   -1.0333    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7400   -0.3344    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.3397    0.3960    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5036    0.4053    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0809   -0.3104    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4851   -1.0333    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.5895   -1.7079    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.0177   -0.9924    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7628   -1.7006    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  3  2  1  0  0  0  0\n 21  2  2  0  0  0  0\n  4  3  2  0  0  0  0\n  5  4  1  0  0  0  0\n  6  5  1  0  0  0  0\n  5 19  2  0  0  0  0\n  7  6  2  0  0  0  0\n  8  7  1  0  0  0  0\n  8  9  1  0  0  0  0\n 18  8  2  0  0  0  0\n  9 10  1  0  0  0  0\n  9 11  2  0  0  0  0\n 12 11  1  0  0  0  0\n 13 12  2  0  0  0  0\n 13 14  1  0  0  0  0\n 18 13  1  0  0  0  0\n 14 15  2  0  0  0  0\n 16 15  1  0  0  0  0\n 17 16  2  0  0  0  0\n 18 17  1  0  0  0  0\n 19 20  1  0  0  0  0\n 19 21  1  0  0  0  0\nM  END",
          "smiles": "Cc1ccc(c(C)c1)/N=N/c2c3ccccc3ccc2O",
          "formula": "C18H16N2O",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "ca4fc52d-610f-4f21-b06b-5a9c32c7841b"
          },
          "defined_stereo": 0,
          "ez_centers": 1,
          "molecular_weight": "276.3331",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "c54b3302-ebb6-4b11-8521-6dee72ab4ba5",
      "version": "10",
      "structure": {
        "id": "16097a92-ac39-4c76-bb30-5010073a07e8",
        "molfile": "\n  Marvin  01132101202D          \n\n 21 23  0  0  0  0            999 V2000\n    6.4851   -1.0333    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0605   -1.7340    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.3099   -1.0333    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0809   -0.3104    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.2357   -1.7340    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4647   -2.4532    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7196   -1.7543    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7400   -0.3344    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5036    0.4053    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8241   -2.4310    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.2970   -2.4606    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0494   -3.1725    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.3397    0.3960    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.9918   -2.4199    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.5895   -1.7079    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.5766   -3.1317    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7628   -1.7006    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.0177   -0.9924    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7368   -3.1187    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.3401   -2.4068    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.5171   -2.3941    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  0  0  0  0\n  1  3  1  0  0  0  0\n  1  4  1  0  0  0  0\n  2  5  1  0  0  0  0\n  2  6  1  0  0  0  0\n  3  7  2  0  0  0  0\n  3  8  1  0  0  0  0\n  4  9  2  0  0  0  0\n  5 10  2  0  0  0  0\n  6 11  2  0  0  0  0\n  6 12  1  0  0  0  0\n  8 13  2  0  0  0  0\n 10 14  1  0  0  0  0\n 14 15  2  0  0  0  0\n 14 16  1  0  0  0  0\n 15 17  1  0  0  0  0\n 15 18  1  0  0  0  0\n 16 19  2  0  0  0  0\n 17 20  2  0  0  0  0\n  7 11  1  0  0  0  0\n  9 13  1  0  0  0  0\n 19 20  1  0  0  0  0\n 20 21  1  0  0  0  0\nM  END",
        "smiles": "Cc1ccc(c(C)c1)/N=N/c2c3ccccc3ccc2O",
        "formula": "C18H16N2O",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 1,
        "molecular_weight": "276.3331",
        "optical_activity": "NONE",
        "references": [
          "f2b53156-c337-4499-84de-4f64334b37f6",
          "6e6f382a-98d8-4637-8366-cd004b14402d"
        ],
        "stereo_centers": 0
      },
      "unii": "8C1M5O3ECT"
    }
  ]
}