{
  "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": "e0875ba2-7f5c-4e6d-9d4a-71c4a70075fc",
          "code": "4-(METHYLTHIO)-2-PENTANONE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=5694",
          "code_system": "JECFA EVALUATION",
          "references": [
            "ab76b735-0c64-4bcc-a3ad-d6487d977091"
          ]
        },
        {
          "uuid": "b215bbf9-6be5-4ac5-abc7-88e8ca5f5619",
          "code": "143764-28-7",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=143764-28-7",
          "code_system": "CAS",
          "references": [
            "ab76b735-0c64-4bcc-a3ad-d6487d977091",
            "6efd98a1-a7a1-4e03-8714-6b8ed808f2fc"
          ]
        },
        {
          "uuid": "9b3214be-a69f-40d0-af4d-35521aa27b89",
          "code": "6428938",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/6428938",
          "code_system": "PUBCHEM",
          "references": [
            "ab76b735-0c64-4bcc-a3ad-d6487d977091"
          ]
        },
        {
          "uuid": "9965f565-666f-449b-8cd0-8eaf0756a1e2",
          "code": "V3J5V0HD9K",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "b731007e-7e2f-78b9-1be1-f6ad56a26ec2",
          "code": "DTXSID70932086",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID70932086",
          "code_system": "EPA CompTox"
        },
        {
          "uuid": "2ff108c8-a25e-e6a1-8b63-20e43ef42dbd",
          "code": "1676",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/1676/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "b70aed65-b963-9f02-1c3b-3c4025082e73"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "63c99c86-8c0f-4c41-976b-b182bcb40172",
          "name": "2-PENTANONE, 4-(METHYLTHIO)-",
          "stdName": "2-PENTANONE, 4-(METHYLTHIO)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "614db4e5-5a33-40ed-ba1d-229617eacc33",
            "49496366-bff5-4090-84d3-106d20ba88e2"
          ],
          "display_name": false
        },
        {
          "uuid": "38b46cee-f4c4-4a8e-8f29-a0f913c97771",
          "name": "4-(METHYLTHIO)-2-PENTANONE",
          "stdName": "4-(METHYLTHIO)-2-PENTANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "614db4e5-5a33-40ed-ba1d-229617eacc33",
            "98688c90-42d5-4337-9544-830fbad703ce",
            "2e782a81-5456-476c-b6ad-83b3f94089a1",
            "2576e53e-adda-4ff3-8bca-c2a123a28b60"
          ],
          "display_name": true
        },
        {
          "uuid": "b7736098-7ad2-4bd6-831c-848fb7ccf237",
          "name": "4-(METHYLTHIO)-2-PENTANONE [FHFI]",
          "stdName": "4-(METHYLTHIO)-2-PENTANONE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "614db4e5-5a33-40ed-ba1d-229617eacc33",
            "2576e53e-adda-4ff3-8bca-c2a123a28b60"
          ],
          "display_name": false
        },
        {
          "uuid": "a22177ed-e7b8-4e57-96b1-48fea3c59b2f",
          "name": "FEMA NO. 4182",
          "stdName": "FEMA NO. 4182",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "614db4e5-5a33-40ed-ba1d-229617eacc33",
            "2576e53e-adda-4ff3-8bca-c2a123a28b60"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "98688c90-42d5-4337-9544-830fbad703ce",
          "citation": "JECFA",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "614db4e5-5a33-40ed-ba1d-229617eacc33",
          "citation": "JECFA: JOINT FAO/WHO COMMITTEE FOOD ADD",
          "doc_type": "JECFA: JOINT FAO/WHO COMMITTEE FOOD ADD",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "49496366-bff5-4090-84d3-106d20ba88e2",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2576e53e-adda-4ff3-8bca-c2a123a28b60",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ab76b735-0c64-4bcc-a3ad-d6487d977091",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391352000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "82fff1c1-6bca-43e5-8657-35ef317f22b0",
          "citation": "SRS import [V3J5V0HD9K]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=V3J5V0HD9K",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391352000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2e782a81-5456-476c-b6ad-83b3f94089a1",
          "citation": "4-(METHYLTHIO)-2-PENTANONE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "6efd98a1-a7a1-4e03-8714-6b8ed808f2fc",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "b70aed65-b963-9f02-1c3b-3c4025082e73",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "e06e471d-2981-48d3-8eed-3632e71e42c3",
          "id": "e06e471d-2981-48d3-8eed-3632e71e42c3",
          "molfile": "\n  Marvin  01132111382D          \n\n  8  7  0  0  0  0            999 V2000\n    6.0249   -5.0187    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7452   -5.4251    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4583   -5.0103    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    7.4583   -4.1811    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.1786   -5.4126    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.8874   -4.9979    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6036   -5.4001    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.8874   -4.1687    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  2  1  0  0  0  0\n  4  3  1  0  0  0  0\n  3  5  1  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  6  8  2  0  0  0  0\nM  END",
          "smiles": "CC(=O)CC(C)SC",
          "formula": "C6H12OS",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "59d4d294-0cbe-440e-8fab-3442f750fd59"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "132.2252",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "cc61e0d1-7c37-4c3e-9a6e-02a768c6f8d6",
      "version": "4",
      "structure": {
        "id": "aae0b97b-22d0-4d7a-8389-268a03852649",
        "molfile": "\n  Marvin  01132108522D          \n\n  8  7  0  0  0  0            999 V2000\n    6.0249   -5.0187    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7452   -5.4251    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    8.8874   -4.1687    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4583   -4.1811    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4583   -5.0103    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.1786   -5.4126    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.8874   -4.9979    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6036   -5.4001    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  5  2  1  0  0  0  0\n  2  1  1  0  0  0  0\n  7  3  2  0  0  0  0\n  4  5  1  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  7  8  1  0  0  0  0\nM  END",
        "smiles": "CC(=O)CC(C)SC",
        "formula": "C6H12OS",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "RACEMIC",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "132.2252",
        "optical_activity": "( + / - )",
        "references": [
          "82fff1c1-6bca-43e5-8657-35ef317f22b0",
          "49496366-bff5-4090-84d3-106d20ba88e2"
        ],
        "stereo_centers": 1
      },
      "unii": "V3J5V0HD9K"
    }
  ]
}