{
  "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": "9fd92b91-439f-4442-add9-a9f1cb824d85",
          "code": "1-MERCAPTO-2-PROPANONE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=1083",
          "code_system": "JECFA EVALUATION",
          "references": [
            "671171b6-461f-45f4-a419-b7719c7fba32"
          ]
        },
        {
          "uuid": "d7e39876-471b-4a05-a133-d105fb4e43c5",
          "code": "24653-75-6",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=24653-75-6",
          "code_system": "CAS",
          "references": [
            "671171b6-461f-45f4-a419-b7719c7fba32",
            "c52a9989-cf91-41f2-8ec0-d922e306190e"
          ]
        },
        {
          "uuid": "fa743ab6-fd07-4100-8038-a2ad89cd8769",
          "code": "520144",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/520144",
          "code_system": "PUBCHEM",
          "references": [
            "671171b6-461f-45f4-a419-b7719c7fba32"
          ]
        },
        {
          "uuid": "b59945b5-9344-49c2-5ffc-f199b04840b3",
          "code": "DTXSID50179396",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID50179396",
          "code_system": "EPA CompTox",
          "references": [
            "bb9063b1-a61d-8f6b-a483-0741f68ed300"
          ]
        },
        {
          "uuid": "4354e982-04f5-4b78-9df0-eeeff253f67b",
          "code": "YAZ3C89IVG",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "a8efe1b4-d13e-86b6-db69-12d861002135",
          "code": "488",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/488/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "e9739bd3-216e-f7b2-c645-af7fe2c7f1b2"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "0b2c7625-4233-42b7-94b9-35e0c1dd1e81",
          "name": "1-MERCAPTO-2-PROPANONE",
          "stdName": "1-MERCAPTO-2-PROPANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "de6364fd-1ef2-4ed5-bf47-b7a31565c6ac",
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "9362dd83-6e57-4c54-96f4-154bb94173e8",
            "3c42c47b-b42f-4e9a-a853-5bda00c21bd7"
          ],
          "display_name": true
        },
        {
          "uuid": "dd0f9e3f-be55-4b8c-98ca-f1a6de5164a4",
          "name": "1-MERCAPTO-2-PROPANONE [FHFI]",
          "stdName": "1-MERCAPTO-2-PROPANONE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "9362dd83-6e57-4c54-96f4-154bb94173e8"
          ],
          "display_name": false
        },
        {
          "uuid": "689dee74-5545-464e-b931-51e769004176",
          "name": "2-PROPANONE, 1-MERCAPTO-",
          "stdName": "2-PROPANONE, 1-MERCAPTO-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "ff1791ed-0251-4d94-8620-e02d7c79826b"
          ],
          "display_name": false
        },
        {
          "uuid": "42d3b771-c281-4cc9-9451-03f3e0066e20",
          "name": "2-PROPANONE, MERCAPTO-",
          "stdName": "2-PROPANONE, MERCAPTO-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "ff1791ed-0251-4d94-8620-e02d7c79826b"
          ],
          "display_name": false
        },
        {
          "uuid": "222942f2-7116-46b7-a4b0-d29350606dd4",
          "name": "3-MERCAPTO-2-PROPANONE",
          "stdName": "3-MERCAPTO-2-PROPANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "ff1791ed-0251-4d94-8620-e02d7c79826b"
          ],
          "display_name": false
        },
        {
          "uuid": "b79ff096-0c59-4b57-858a-a8b692e1925d",
          "name": "FEMA NO. 3856",
          "stdName": "FEMA NO. 3856",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "9362dd83-6e57-4c54-96f4-154bb94173e8"
          ],
          "display_name": false
        },
        {
          "uuid": "86592011-4622-4ac4-9221-578a10d00678",
          "name": "MERCAPTOACETONE",
          "stdName": "MERCAPTOACETONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "89f75223-5dd4-4f80-b332-1eb982e445be",
            "ff1791ed-0251-4d94-8620-e02d7c79826b"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "3c42c47b-b42f-4e9a-a853-5bda00c21bd7",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "9362dd83-6e57-4c54-96f4-154bb94173e8",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "89f75223-5dd4-4f80-b332-1eb982e445be",
          "citation": "HANDBOOK OF FLAVOR INGREDIENTS",
          "doc_type": "HANDBOOK OF FLAVOR INGREDIENTS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ff1791ed-0251-4d94-8620-e02d7c79826b",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "671171b6-461f-45f4-a419-b7719c7fba32",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391045000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "a2a71948-5414-4bb6-bef7-efb9e70ce156",
          "citation": "SRS import [YAZ3C89IVG]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=YAZ3C89IVG",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391045000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8158672b-b347-47d3-9c96-9699c7d43d96",
          "citation": "CHEMID  2011",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "de6364fd-1ef2-4ed5-bf47-b7a31565c6ac",
          "citation": "1-MERCAPTO-2-PROPANONE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "bb9063b1-a61d-8f6b-a483-0741f68ed300",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=24653-75-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "c52a9989-cf91-41f2-8ec0-d922e306190e",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "e9739bd3-216e-f7b2-c645-af7fe2c7f1b2",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "b3572345-8f52-46e6-9256-fd521aff14df",
          "id": "b3572345-8f52-46e6-9256-fd521aff14df",
          "molfile": "\n  Marvin  01132109172D          \n\n  5  4  0  0  0  0            999 V2000\n    5.9215   -5.5851    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.6340   -5.1701    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.6340   -4.3447    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.3512   -5.5851    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.0638   -5.1701    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  2  3  2  0  0  0  0\n  4  2  1  0  0  0  0\n  4  5  1  0  0  0  0\nM  END",
          "smiles": "CC(=O)CS",
          "formula": "C3H6OS",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "75bc39cb-0e66-4856-8b3b-9a318acae4b3"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "90.1453",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "ef1a1bd7-6b11-481d-bbf7-0db3f06c5685",
      "version": "4",
      "structure": {
        "id": "e2b889a9-113f-4615-932f-9df36eb13b91",
        "molfile": "\n  Marvin  01132111442D          \n\n  5  4  0  0  0  0            999 V2000\n    7.3512   -5.5851    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.6340   -5.1701    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.9215   -5.5851    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.6340   -4.3447    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    8.0638   -5.1701    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  1  0  0  0  0\n  2  4  2  0  0  0  0\n  1  5  1  0  0  0  0\nM  END",
        "smiles": "CC(=O)CS",
        "formula": "C3H6OS",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "90.1453",
        "optical_activity": "NONE",
        "references": [
          "8158672b-b347-47d3-9c96-9699c7d43d96",
          "a2a71948-5414-4bb6-bef7-efb9e70ce156"
        ],
        "stereo_centers": 0
      },
      "unii": "YAZ3C89IVG"
    }
  ]
}