{
  "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": "c273e636-28e7-4496-84ec-7d77c003afa0",
          "code": "156472-94-5",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=156472-94-5",
          "code_system": "CAS",
          "references": [
            "3973d974-fc3f-4f60-8fea-6e23ca4f608a",
            "48f35c3a-d530-4f42-aa02-5f284d85f6e5"
          ]
        },
        {
          "uuid": "fd18ee83-34ba-45bc-b6f5-f16de24f200d",
          "code": "(+/-)-ETHYL 3-MERCAPTOBUTYRATE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=4072",
          "code_system": "JECFA EVALUATION",
          "references": [
            "3973d974-fc3f-4f60-8fea-6e23ca4f608a"
          ]
        },
        {
          "uuid": "eaa6c308-e91b-445b-8bcd-b56b21f2b8af",
          "code": "9833996",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/9833996",
          "code_system": "PUBCHEM",
          "references": [
            "3973d974-fc3f-4f60-8fea-6e23ca4f608a"
          ]
        },
        {
          "uuid": "2fbc56cc-9528-43b2-966c-689962bddeef",
          "code": "Y86NFY8S7J",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "cf3700f2-aaa6-9bad-b26c-34acc0746dde",
          "code": "1303",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/1303/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "2bd315f5-dee8-19ac-d3fd-0b2bd09eab3a"
          ]
        },
        {
          "uuid": "86b81589-35ae-7c66-8709-39c46709b70c",
          "code": "DTXSID80935467",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID80935467",
          "code_system": "EPA CompTox",
          "references": [
            "4f54f210-50d5-650b-1e36-d869e878dc84"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "521990b5-1de1-4aba-8702-8f589c494143",
          "name": "(±)-ETHYL 3-MERCAPTOBUTYRATE [FHFI]",
          "stdName": "(+/-)-ETHYL 3-MERCAPTOBUTYRATE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "384b80d3-5049-4a42-871f-dbc8d9ea3df7",
            "7360ab69-6581-49d2-9b24-7cd8441ccad4"
          ],
          "display_name": false
        },
        {
          "uuid": "382b1807-a358-49c2-8bc5-b977e0f42800",
          "name": "BUTANOIC ACID, 3-MERCAPTO-, ETHYL ESTER",
          "stdName": "BUTANOIC ACID, 3-MERCAPTO-, ETHYL ESTER",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7360ab69-6581-49d2-9b24-7cd8441ccad4",
            "5dbeb2c4-5466-411d-a8d8-09324cbfe4bc"
          ],
          "display_name": false
        },
        {
          "uuid": "15c5fa9a-c6a7-437c-b604-a34fafc62467",
          "name": "BUTANOIC ACID, 3-MERCAPTO-, ETHYL ESTER, (±)-",
          "stdName": "BUTANOIC ACID, 3-MERCAPTO-, ETHYL ESTER, (+/-)-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7360ab69-6581-49d2-9b24-7cd8441ccad4",
            "5dbeb2c4-5466-411d-a8d8-09324cbfe4bc"
          ],
          "display_name": false
        },
        {
          "uuid": "60c87539-a0b8-44c7-a54c-23790b033c38",
          "name": "ETHYL 3-MERCAPTOBUTANOATE",
          "stdName": "ETHYL 3-MERCAPTOBUTANOATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7360ab69-6581-49d2-9b24-7cd8441ccad4",
            "5dbeb2c4-5466-411d-a8d8-09324cbfe4bc"
          ],
          "display_name": false
        },
        {
          "uuid": "f41e2523-68a6-4201-9b45-2054777d6b56",
          "name": "ETHYL 3-MERCAPTOBUTYRATE",
          "stdName": "ETHYL 3-MERCAPTOBUTYRATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "384b80d3-5049-4a42-871f-dbc8d9ea3df7",
            "7360ab69-6581-49d2-9b24-7cd8441ccad4"
          ],
          "display_name": true
        },
        {
          "uuid": "fcacfd7f-26d6-4416-9029-dbacca50ffd4",
          "name": "ETHYL 3-MERCAPTOBUTYRATE, (±)-",
          "stdName": "ETHYL 3-MERCAPTOBUTYRATE, (+/-)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7360ab69-6581-49d2-9b24-7cd8441ccad4",
            "9f583f77-6ce5-4687-8864-1eadbbff31d0"
          ],
          "display_name": false
        },
        {
          "uuid": "dc4fb68f-043b-478a-ab8c-46b0daf2ceb0",
          "name": "FEMA NO. 3977",
          "stdName": "FEMA NO. 3977",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "384b80d3-5049-4a42-871f-dbc8d9ea3df7",
            "7360ab69-6581-49d2-9b24-7cd8441ccad4"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "384b80d3-5049-4a42-871f-dbc8d9ea3df7",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "7360ab69-6581-49d2-9b24-7cd8441ccad4",
          "citation": "HANDBOOK OF FLAVOR INGREDIENTS",
          "doc_type": "HANDBOOK OF FLAVOR INGREDIENTS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "9f583f77-6ce5-4687-8864-1eadbbff31d0",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5dbeb2c4-5466-411d-a8d8-09324cbfe4bc",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3973d974-fc3f-4f60-8fea-6e23ca4f608a",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391122000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "fc1194bb-42ce-42f1-b340-1db23ffe2cff",
          "citation": "SRS import [Y86NFY8S7J]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=Y86NFY8S7J",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391122000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "48f35c3a-d530-4f42-aa02-5f284d85f6e5",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "4f54f210-50d5-650b-1e36-d869e878dc84",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        },
        {
          "uuid": "2bd315f5-dee8-19ac-d3fd-0b2bd09eab3a",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "c4327bdb-b35b-4cf1-98be-ac640e1ed4ce",
          "id": "c4327bdb-b35b-4cf1-98be-ac640e1ed4ce",
          "molfile": "\n  Marvin  01132110082D          \n\n  9  8  0  0  0  0            999 V2000\n    6.0517   -5.1765    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.3283   -4.7800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.3099   -3.9552    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    4.5864   -3.5587    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.5680   -2.7339    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8812   -3.9870    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1578   -3.5905    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    3.1394   -2.7657    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.4527   -4.0188    0.0000 S   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  4  5  2  0  0  0  0\n  6  4  1  0  0  0  0\n  7  6  1  0  0  0  0\n  7  8  1  0  0  0  0\n  7  9  1  0  0  0  0\nM  END",
          "smiles": "CCOC(=O)CC(C)S",
          "formula": "C6H12O2S",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "30a635f9-ea59-4c94-ace4-50bd87908b37"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "148.2246",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "eb5c043b-11a8-41e4-ae67-4c8b77394ad0",
      "version": "7",
      "structure": {
        "id": "b0a08cad-7e31-491e-acf7-d08dac4db55c",
        "molfile": "\n  Marvin  01132109092D          \n\n  9  8  0  0  0  0            999 V2000\n    2.4527   -4.0188    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1394   -2.7657    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.0517   -5.1765    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.3283   -4.7800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.5680   -2.7339    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    5.3099   -3.9552    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    4.5864   -3.5587    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8812   -3.9870    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1578   -3.5905    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  9  1  1  0  0  0  0\n  8  7  1  0  0  0  0\n  9  2  1  0  0  0  0\n  7  6  1  0  0  0  0\n  4  3  1  0  0  0  0\n  9  8  1  0  0  0  0\n  6  4  1  0  0  0  0\n  7  5  2  0  0  0  0\nM  END",
        "smiles": "CCOC(=O)CC(C)S",
        "formula": "C6H12O2S",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "RACEMIC",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "148.2246",
        "optical_activity": "( + / - )",
        "references": [
          "fc1194bb-42ce-42f1-b340-1db23ffe2cff",
          "5dbeb2c4-5466-411d-a8d8-09324cbfe4bc"
        ],
        "stereo_centers": 1
      },
      "unii": "Y86NFY8S7J"
    }
  ]
}