{
  "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": "828be570-08bc-49b8-925e-442f2df07a3f",
          "code": "1-METHYLTHIO-2-PROPANONE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=1833",
          "code_system": "JECFA EVALUATION",
          "references": [
            "ac2898e3-dab6-404f-addc-e73d0f45a3ea"
          ]
        },
        {
          "uuid": "b890846b-5d99-4935-b913-cce3ce3aeada",
          "code": "14109-72-9",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=14109-72-9",
          "code_system": "CAS",
          "references": [
            "ac2898e3-dab6-404f-addc-e73d0f45a3ea",
            "2e3d2c3a-cea7-43a3-b08a-dd8528a58f5d"
          ]
        },
        {
          "uuid": "b74b96fc-c3bf-40a7-9653-82e11ea63947",
          "code": "6430713",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/6430713",
          "code_system": "PUBCHEM",
          "references": [
            "ac2898e3-dab6-404f-addc-e73d0f45a3ea"
          ]
        },
        {
          "uuid": "50172507-8917-461e-0a5d-6169ba5b52c9",
          "code": "DTXSID30161572",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID30161572",
          "code_system": "EPA CompTox",
          "references": [
            "b68a137c-2253-74a6-6134-f640963c6a1a"
          ]
        },
        {
          "uuid": "d6b43323-076c-49a5-81b9-e87d6545b310",
          "code": "S6V0DW7BQA",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "518bd0b5-6b66-b406-6efb-a66940d0a935",
          "code": "518",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/518/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "79526a95-7072-1a15-0324-cad9c4154670"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "65ff6832-fa78-47c1-afd7-89b8ea5cec60",
          "name": "(METHYLTHIO)ACETONE",
          "stdName": "(METHYLTHIO)ACETONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e49b208-76e3-400e-bc65-78d5481b7759",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        },
        {
          "uuid": "c178eda8-57b9-4b3a-a889-a21e6a3a65ab",
          "name": ".ALPHA.(METHYLTHIO)ACETONE",
          "stdName": ".ALPHA.(METHYLTHIO)ACETONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e49b208-76e3-400e-bc65-78d5481b7759",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        },
        {
          "uuid": "419c1de7-f4d7-4228-9daa-d02b27cd9c53",
          "name": ".ALPHA.-(METHYLTHIO)PROPANONE",
          "stdName": ".ALPHA.-(METHYLTHIO)PROPANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e49b208-76e3-400e-bc65-78d5481b7759",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        },
        {
          "uuid": "ef4b9b21-ec7b-44af-abfd-da42baa04650",
          "name": "1-METHYLTHIO-2-PROPANONE",
          "stdName": "1-METHYLTHIO-2-PROPANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ecd2bba8-e833-4f54-a275-afb0fd1a1e8b",
            "3e49b208-76e3-400e-bc65-78d5481b7759",
            "417a613f-4d72-4ef9-930b-718c533c7734",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": true
        },
        {
          "uuid": "12a8b354-74c9-4f63-aae8-fa1597cbcd78",
          "name": "1-METHYLTHIO-2-PROPANONE [FHFI]",
          "stdName": "1-METHYLTHIO-2-PROPANONE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ecd2bba8-e833-4f54-a275-afb0fd1a1e8b",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        },
        {
          "uuid": "fba5cd2a-7202-44b0-bdec-a01da0cc0817",
          "name": "2-PROPANONE, 1-(METHYLTHIO)-",
          "stdName": "2-PROPANONE, 1-(METHYLTHIO)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e49b208-76e3-400e-bc65-78d5481b7759",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        },
        {
          "uuid": "25de084c-00ae-4ef2-986e-d119bda130ed",
          "name": "2-THIA-4-PENTANONE",
          "stdName": "2-THIA-4-PENTANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3e49b208-76e3-400e-bc65-78d5481b7759",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        },
        {
          "uuid": "65294596-9bbd-407c-a30c-6db0db790a83",
          "name": "FEMA NO. 3882",
          "stdName": "FEMA NO. 3882",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ecd2bba8-e833-4f54-a275-afb0fd1a1e8b",
            "f563a330-7c3a-46ab-89d2-f6274aa5ee2a"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "3e49b208-76e3-400e-bc65-78d5481b7759",
          "citation": "JECFA",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "f563a330-7c3a-46ab-89d2-f6274aa5ee2a",
          "citation": "JECFA: JOINT FAO/WHO COMMITTEE FOOD ADD",
          "doc_type": "JECFA: JOINT FAO/WHO COMMITTEE FOOD ADD",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ecd2bba8-e833-4f54-a275-afb0fd1a1e8b",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ac2898e3-dab6-404f-addc-e73d0f45a3ea",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391362000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b195348b-af2f-404a-b831-189a032f1cd3",
          "citation": "SRS import [S6V0DW7BQA]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=S6V0DW7BQA",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391362000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "417a613f-4d72-4ef9-930b-718c533c7734",
          "citation": "1-METHYLTHIO-2-PROPANONE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "b68a137c-2253-74a6-6134-f640963c6a1a",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=14109-72-9",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "2e3d2c3a-cea7-43a3-b08a-dd8528a58f5d",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "79526a95-7072-1a15-0324-cad9c4154670",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "4878842d-a21e-4312-8656-5dce6e55f6c8",
          "id": "4878842d-a21e-4312-8656-5dce6e55f6c8",
          "molfile": "\n  Marvin  01132103482D          \n\n  6  5  0  0  0  0            999 V2000\n   10.2779   -4.8996    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.5087   -4.5935    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    8.8608   -5.1043    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.0956   -4.7982    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4437   -5.3089    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.9764   -3.9853    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  3  4  1  0  0  0  0\n  4  5  1  0  0  0  0\n  4  6  2  0  0  0  0\nM  END",
          "smiles": "CC(=O)CSC",
          "formula": "C4H8OS",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "4427fe0d-065a-401f-a613-b0231960604f"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "104.172",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "59833281-80e6-42f1-a2a5-341c14f205c0",
      "version": "4",
      "structure": {
        "id": "3c9d2830-13f9-4d5b-97c3-552a63ea0650",
        "molfile": "\n  Marvin  01132103132D          \n\n  6  5  0  0  0  0            999 V2000\n   10.2779   -4.8996    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.9764   -3.9853    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4437   -5.3089    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.5087   -4.5935    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    8.0956   -4.7982    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.8608   -5.1043    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  4  1  1  0  0  0  0\n  5  2  2  0  0  0  0\n  5  3  1  0  0  0  0\n  6  4  1  0  0  0  0\n  6  5  1  0  0  0  0\nM  END",
        "smiles": "CC(=O)CSC",
        "formula": "C4H8OS",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "104.172",
        "optical_activity": "NONE",
        "references": [
          "b195348b-af2f-404a-b831-189a032f1cd3",
          "ecd2bba8-e833-4f54-a275-afb0fd1a1e8b"
        ],
        "stereo_centers": 0
      },
      "unii": "S6V0DW7BQA"
    }
  ]
}