{
  "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": "434e8b00-0401-49fc-a7e5-f52343120302",
          "code": "533-75-5",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=533-75-5",
          "code_system": "CAS",
          "references": [
            "9e22b101-3850-4916-a9df-2157e9e4191b",
            "66675318-a3fd-4d35-b53e-25ddff163622"
          ]
        },
        {
          "uuid": "f89e303d-9f08-488c-9444-d53bdede2eb6",
          "code": "TROPOLONE",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Tropolone",
          "code_system": "WIKIPEDIA",
          "references": [
            "9e22b101-3850-4916-a9df-2157e9e4191b"
          ]
        },
        {
          "uuid": "a16b968f-479b-4f48-8a88-fd7a5987cedb",
          "code": "208-577-2",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.007.799",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "9e22b101-3850-4916-a9df-2157e9e4191b"
          ]
        },
        {
          "uuid": "38deac59-caea-4f1e-ba82-14197675ff27",
          "code": "1368873",
          "comments": "RxNorm",
          "type": "PRIMARY",
          "url": "https://rxnav.nlm.nih.gov/REST/rxcui/1368873/allProperties.xml?prop=all",
          "code_system": "RXCUI",
          "references": [
            "9e22b101-3850-4916-a9df-2157e9e4191b"
          ]
        },
        {
          "uuid": "ed9deaa7-3e95-42e2-a18c-b1fa5dfbd6d9",
          "code": "m11233",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m11233?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "9e22b101-3850-4916-a9df-2157e9e4191b"
          ]
        },
        {
          "uuid": "70c3b4ce-ba19-44a9-933e-bfe1ead43935",
          "code": "10789",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/10789",
          "code_system": "PUBCHEM",
          "references": [
            "9e22b101-3850-4916-a9df-2157e9e4191b"
          ]
        },
        {
          "uuid": "9a643cd4-66e6-a82b-1a41-433766564db8",
          "code": "DTXSID8049416",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID8049416",
          "code_system": "EPA CompTox",
          "references": [
            "afd8bf6b-e44a-b974-e710-f363ec60d0cd"
          ]
        },
        {
          "uuid": "4f75b849-8930-46a7-a071-f6a285597aa3",
          "code": "7L6DL16P1T",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "73dedc3f-6f2f-aae2-c094-e4c8ed9bd0b8",
          "code": "79966",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:79966",
          "code_system": "CHEBI",
          "references": [
            "80f453bf-af5b-395b-3924-e9080b96159f"
          ]
        },
        {
          "uuid": "daf98155-7759-9cd0-633c-52f3be35c3ac",
          "code": "89303",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=89303",
          "code_system": "NSC",
          "references": [
            "690602b1-f739-a406-9bd8-b8ac5469159c"
          ]
        },
        {
          "uuid": "4c8ad946-3ddb-6b9b-49ee-1b3f8e2398f5",
          "code": "7L6DL16P1T",
          "type": "PRIMARY",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=7L6DL16P1T",
          "code_system": "DAILYMED",
          "references": [
            "e9bb61a9-a435-ae53-2df9-09806038074f"
          ]
        },
        {
          "uuid": "ee5633e1-4611-8a8e-bb5a-7779acb8c5da",
          "code": "100000182238",
          "type": "PRIMARY",
          "code_system": "SMS_ID",
          "references": [
            "3ab0383a-ab26-bf09-e990-fa28b053f3de"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "d286d354-1728-4136-a842-1db9bf27edf5",
          "name": ".ALPHA.-TROPOLONE",
          "stdName": ".ALPHA.-TROPOLONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "9138f0e0-504c-4442-8575-ddd795f9f697"
          ],
          "display_name": false
        },
        {
          "uuid": "d438a1be-7024-41fc-8cf8-a206896b52c6",
          "name": "2,4,6-CYCLOHEPTATRIEN-1-ONE, 2-HYDROXY-",
          "stdName": "2,4,6-CYCLOHEPTATRIEN-1-ONE, 2-HYDROXY-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "9138f0e0-504c-4442-8575-ddd795f9f697"
          ],
          "display_name": false
        },
        {
          "uuid": "34ff4cc9-8a21-4925-9dcc-b7683b7e59fc",
          "name": "2-HYDROXY-2,4,6-CYCLOHEPTATRIENE-1-ONE",
          "stdName": "2-HYDROXY-2,4,6-CYCLOHEPTATRIENE-1-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "0cb0730b-d1b4-446c-95a7-43f914d37198"
          ],
          "display_name": false
        },
        {
          "uuid": "d2252dac-246c-4a10-8bfa-9b3d44f7092c",
          "name": "2-HYDROXYTROPONE",
          "stdName": "2-HYDROXYTROPONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "9138f0e0-504c-4442-8575-ddd795f9f697"
          ],
          "display_name": false
        },
        {
          "uuid": "de5a7818-455d-4a6f-955f-eee1e3ec03d9",
          "name": "NSC-89303",
          "stdName": "NSC-89303",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "9138f0e0-504c-4442-8575-ddd795f9f697"
          ],
          "display_name": false
        },
        {
          "uuid": "3aef6a70-c7ff-4bb9-baa6-e6d56911b76d",
          "name": "PURPUROCATECHOL",
          "stdName": "PURPUROCATECHOL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "e8015dea-d31c-4713-8fe9-6350c67c735b"
          ],
          "display_name": false
        },
        {
          "uuid": "8827dd81-7b3f-4a91-a904-cf604e06614a",
          "name": "TROPOLONE",
          "stdName": "TROPOLONE",
          "type": "of",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "5fa9d0af-51cc-407d-b7dd-ef9a9190cabb",
            "9138f0e0-504c-4442-8575-ddd795f9f697",
            "e8015dea-d31c-4713-8fe9-6350c67c735b",
            "98f084cb-bdc2-4157-895f-7acccb7060e1",
            "b4560bb5-7144-46c4-a57f-ff0ba51b5b6d"
          ],
          "display_name": true,
          "domains": [
            "cosmetic"
          ],
          "name_orgs": [
            {
              "uuid": "2ddad280-1af3-4f5b-ac96-35805e9115c5",
              "name_org": "INCI"
            }
          ]
        },
        {
          "uuid": "685e1923-539b-4b01-9bdd-b419f3048166",
          "name": "TROPOLONE [MI]",
          "stdName": "TROPOLONE [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "36b22557-8304-4eb8-9360-634847ed9b0c",
            "e8015dea-d31c-4713-8fe9-6350c67c735b"
          ],
          "display_name": false
        },
        {
          "uuid": "99515b0a-7ea2-36cc-9fd3-488acbc615b0",
          "name": "Tropolone [WHO-DD]",
          "stdName": "TROPOLONE [WHO-DD]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "99ba653f-5ec2-0ed6-7b3a-23225cd253e4"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "9138f0e0-504c-4442-8575-ddd795f9f697",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "36b22557-8304-4eb8-9360-634847ed9b0c",
          "citation": "STN (SCIFINDER)",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "0cb0730b-d1b4-446c-95a7-43f914d37198",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "e8015dea-d31c-4713-8fe9-6350c67c735b",
          "citation": "MERCK",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b4560bb5-7144-46c4-a57f-ff0ba51b5b6d",
          "citation": "PCPC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "9e22b101-3850-4916-a9df-2157e9e4191b",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493389659000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "9c4017f4-b785-4d98-8156-bc040f5a3a38",
          "citation": "SRS import [7L6DL16P1T]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=7L6DL16P1T",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493389659000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5159c1f5-5f61-4638-a92b-eadcbb9e93db",
          "citation": "SAX",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5fa9d0af-51cc-407d-b7dd-ef9a9190cabb",
          "citation": "TROPOLONE [INCI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "98f084cb-bdc2-4157-895f-7acccb7060e1",
          "citation": "TROPOLONE [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "afd8bf6b-e44a-b974-e710-f363ec60d0cd",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=533-75-5",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "99ba653f-5ec2-0ed6-7b3a-23225cd253e4",
          "citation": "WHO-DD",
          "doc_type": "WHO DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "3ab0383a-ab26-bf09-e990-fa28b053f3de",
          "citation": "EU-SRS",
          "doc_type": "EMA LIST",
          "public_domain": true
        },
        {
          "uuid": "66675318-a3fd-4d35-b53e-25ddff163622",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "80f453bf-af5b-395b-3924-e9080b96159f",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "690602b1-f739-a406-9bd8-b8ac5469159c",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "e9bb61a9-a435-ae53-2df9-09806038074f",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "4a94c24f-df57-4871-8299-74db43f02ed7",
          "id": "4a94c24f-df57-4871-8299-74db43f02ed7",
          "molfile": "\n  Marvin  01132103542D          \n\n  9  9  0  0  0  0            999 V2000\n    0.0000   -0.1645    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    0.7325   -0.5089    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.3827    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1743   -0.1799    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.5393   -0.9278    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1743   -1.6526    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.3827   -1.8453    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.7325   -1.3339    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.0000   -1.7040    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  3  2  2  0  0  0  0\n  2  8  1  0  0  0  0\n  4  3  1  0  0  0  0\n  5  4  2  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  2  0  0  0  0\n  7  8  1  0  0  0  0\n  9  8  2  0  0  0  0\nM  END",
          "smiles": "c1ccc(c(=O)cc1)O",
          "formula": "C7H6O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "35aab71d-9f0a-43bc-ac51-e5ab74289536"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "122.1216",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "a497afb0-4694-4f81-8f0f-5c73a0ba8d43",
      "version": "13",
      "structure": {
        "id": "7151117e-8691-4050-abb7-efaab6f55f35",
        "molfile": "\n  Marvin  01132105522D          \n\n  9  9  0  0  0  0            999 V2000\n    0.7325   -1.3339    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.7325   -0.5089    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.3827   -1.8453    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.3827    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.0000   -0.1645    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1743   -1.6526    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1743   -0.1799    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.5393   -0.9278    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.0000   -1.7040    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  1  2  0  0  0  0\n  4  2  1  0  0  0  0\n  5  2  2  0  0  0  0\n  6  3  1  0  0  0  0\n  7  4  2  0  0  0  0\n  8  6  2  0  0  0  0\n  9  1  1  0  0  0  0\n  8  7  1  0  0  0  0\nM  END",
        "smiles": "c1ccc(c(=O)cc1)O",
        "formula": "C7H6O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "122.1216",
        "optical_activity": "NONE",
        "references": [
          "9c4017f4-b785-4d98-8156-bc040f5a3a38",
          "5159c1f5-5f61-4638-a92b-eadcbb9e93db"
        ],
        "stereo_centers": 0
      },
      "unii": "7L6DL16P1T"
    }
  ]
}