{
  "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": "4abe8eed-6b2b-4f9c-b589-d91bb809d7cd",
          "code": "2,3-BUTANEDITHIOL",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=2280",
          "code_system": "JECFA EVALUATION",
          "references": [
            "1a297c2d-bd4d-4790-ab06-57806a2d9795"
          ]
        },
        {
          "uuid": "34e95379-1587-420f-995f-28aed34f3404",
          "code": "4532-64-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=4532-64-3",
          "code_system": "CAS",
          "references": [
            "1a297c2d-bd4d-4790-ab06-57806a2d9795",
            "93bbbedb-adc9-48be-9daf-8045f1581784"
          ]
        },
        {
          "uuid": "85e0164c-0639-462b-a716-9f6f8106efd2",
          "code": "224-870-8",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.022.611",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "1a297c2d-bd4d-4790-ab06-57806a2d9795"
          ]
        },
        {
          "uuid": "009566f3-2a08-4ed2-9b01-8020f6dbab98",
          "code": "548353",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/548353",
          "code_system": "PUBCHEM",
          "references": [
            "1a297c2d-bd4d-4790-ab06-57806a2d9795"
          ]
        },
        {
          "uuid": "0fac70cf-b74b-cfa2-9636-a89e4a5f6d53",
          "code": "DTXSID5047089",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID5047089",
          "code_system": "EPA CompTox",
          "references": [
            "c0fac9c0-ae74-3dcb-d67b-d9628d0a24c4"
          ]
        },
        {
          "uuid": "b789e32e-f3b2-49d2-828b-1a39bd2b7fa3",
          "code": "69G298U39K",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "1629fc4f-01a6-939c-2dee-519d9b31e9cc",
          "code": "1081842",
          "type": "PRIMARY",
          "url": "https://store.usp.org/product/1081842",
          "code_system": "RS_ITEM_NUM",
          "references": [
            "94231f0e-bd5c-cac0-8d08-1b0d6cf81463"
          ]
        },
        {
          "uuid": "466de07a-5ac3-b73f-3fd8-7bd3ed8da052",
          "code": "493",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/493/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "5ac71e10-0f59-8da6-72de-a0bec1069c04"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "34a20039-d0d7-49bd-a1d5-888f92b5c088",
          "name": "(±)-2,3-BUTANEDITHIOL",
          "stdName": "(+/-)-2,3-BUTANEDITHIOL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "7f30333b-5928-4bed-9119-0daf39b4724a"
          ],
          "display_name": false
        },
        {
          "uuid": "cfbde1d0-2ae2-4086-9f6d-26505a6885df",
          "name": "2,3-BUTANEDITHIOL",
          "stdName": "2,3-BUTANEDITHIOL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "25493233-1553-43e0-a889-d1e03588c74b",
            "c3c4b5af-18ab-4f04-98da-9ebd9914e9e1",
            "4f18f2ae-5c11-49e8-9c7d-cb50124acd43",
            "bfa645e7-e3be-453c-9560-dcb36820d827",
            "a79f166d-4c41-4d0c-b845-845118c5839e"
          ],
          "display_name": true
        },
        {
          "uuid": "4f16ef63-e34d-49b1-9bfd-ecb329b6eed8",
          "name": "2,3-BUTANEDITHIOL [FHFI]",
          "stdName": "2,3-BUTANEDITHIOL [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "4f18f2ae-5c11-49e8-9c7d-cb50124acd43"
          ],
          "display_name": false
        },
        {
          "uuid": "b009c71d-5df1-4324-a472-83afc89b614c",
          "name": "2,3-BUTANEDITHIOL [USP-RS]",
          "stdName": "2,3-BUTANEDITHIOL [USP-RS]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "a79f166d-4c41-4d0c-b845-845118c5839e"
          ],
          "display_name": false
        },
        {
          "uuid": "093c93ad-6aa9-46a1-9784-7f9356693491",
          "name": "2,3-BUTANEDITHIOL, (±)-",
          "stdName": "2,3-BUTANEDITHIOL, (+/-)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "7f30333b-5928-4bed-9119-0daf39b4724a"
          ],
          "display_name": false
        },
        {
          "uuid": "bb0205ac-bd5f-44f2-a8ba-0d655e013a4e",
          "name": "2,3-DIMERCAPTOBUTANE",
          "stdName": "2,3-DIMERCAPTOBUTANE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "5cbd1bff-9f0c-439e-9be2-80e2a7ff2eae"
          ],
          "display_name": false
        },
        {
          "uuid": "ea9ee388-4660-43f3-98f1-fba26d59569c",
          "name": "FEMA NO. 3477",
          "stdName": "FEMA NO. 3477",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7c959363-a1b3-44c6-b31e-3f601850f372",
            "25493233-1553-43e0-a889-d1e03588c74b"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "25493233-1553-43e0-a889-d1e03588c74b",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "7c959363-a1b3-44c6-b31e-3f601850f372",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5cbd1bff-9f0c-439e-9be2-80e2a7ff2eae",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "7f30333b-5928-4bed-9119-0daf39b4724a",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4f18f2ae-5c11-49e8-9c7d-cb50124acd43",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "a79f166d-4c41-4d0c-b845-845118c5839e",
          "citation": "USP/NF",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "1a297c2d-bd4d-4790-ab06-57806a2d9795",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391105000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "edc083ab-4800-4619-967c-c207b5189854",
          "citation": "SRS import [69G298U39K]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=69G298U39K",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391105000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "c3c4b5af-18ab-4f04-98da-9ebd9914e9e1",
          "citation": "2,3-BUTANEDITHIOL [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "bfa645e7-e3be-453c-9560-dcb36820d827",
          "citation": "2,3-BUTANEDITHIOL [USP-RS]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "c0fac9c0-ae74-3dcb-d67b-d9628d0a24c4",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=4532-64-3",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "93bbbedb-adc9-48be-9daf-8045f1581784",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "94231f0e-bd5c-cac0-8d08-1b0d6cf81463",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "5ac71e10-0f59-8da6-72de-a0bec1069c04",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "2a0ef9bb-88c2-49ca-a5e6-c5a0765ec1c5",
          "id": "2a0ef9bb-88c2-49ca-a5e6-c5a0765ec1c5",
          "molfile": "\n  Marvin  01132102172D          \n\n  6  5  0  0  0  0            999 V2000\n    2.2631   -2.9742    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6732   -2.2584    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    2.2631   -1.5544    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4876   -2.2584    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    3.8998   -2.9742    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8998   -1.5544    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  1  0  0  0  0\n  4  2  1  0  0  0  0\n  4  5  1  0  0  0  0\n  4  6  1  0  0  0  0\nM  END",
          "smiles": "CC(C(C)S)S",
          "formula": "C4H10S2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "MIXED",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "98abc06a-0888-4bb7-8986-948956c1811a"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "122.2545",
          "optical_activity": "UNSPECIFIED",
          "stereo_centers": 2
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "8c80aee1-b46b-4c49-a98c-71f413461369",
      "version": "8",
      "structure": {
        "id": "dfc7cfe4-a28c-44ce-952e-b6ac3daedea7",
        "molfile": "\n  Marvin  01132111362D          \n\n  6  5  0  0  0  0            999 V2000\n    2.2631   -1.5544    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    2.2631   -2.9742    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8998   -1.5544    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8998   -2.9742    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6732   -2.2584    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4876   -2.2584    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  5  1  1  0  0  0  0\n  5  2  1  0  0  0  0\n  6  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(C(C)S)S",
        "formula": "C4H10S2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "MIXED",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "122.2545",
        "optical_activity": "UNSPECIFIED",
        "references": [
          "25493233-1553-43e0-a889-d1e03588c74b",
          "edc083ab-4800-4619-967c-c207b5189854"
        ],
        "stereo_centers": 2
      },
      "unii": "69G298U39K"
    }
  ]
}