{
  "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": "4b877f9e-3e68-418e-84ea-6a35261b9e13",
          "code": "19788-50-2",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=19788-50-2",
          "code_system": "CAS",
          "references": [
            "89d08053-2b72-439c-ae75-1fa6d73243c0",
            "f5ad210a-5538-4683-99f3-a6585ba9895e"
          ]
        },
        {
          "uuid": "04646e45-d121-47e4-9b7a-4e8d9db3ee09",
          "code": "PROPYL 2-MERCAPTOPROPIONATE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=5706",
          "code_system": "JECFA EVALUATION",
          "references": [
            "89d08053-2b72-439c-ae75-1fa6d73243c0"
          ]
        },
        {
          "uuid": "eb8c4770-7151-4875-93f1-6d7db829fcdc",
          "code": "22251515",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/22251515",
          "code_system": "PUBCHEM",
          "references": [
            "89d08053-2b72-439c-ae75-1fa6d73243c0"
          ]
        },
        {
          "uuid": "23c50cc3-0cd1-47bd-bc43-4d3505ec0bcc",
          "code": "A6API9I47Z",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "213254a7-6bbd-5032-2ebc-6950ec8d603a",
          "code": "DTXSID70941577",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID70941577",
          "code_system": "EPA CompTox",
          "references": [
            "2d3ce351-1c83-deff-8ab1-506550277d61"
          ]
        },
        {
          "uuid": "48df9e00-c718-3984-a710-69567d04f9cc",
          "code": "1655",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/1655/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "dc5e60f1-b85b-eef2-9ca1-12d013d3b5e4"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "8b27b715-0cd3-4644-80ed-c07b97408be4",
          "name": "(±)-PROPYL 2-MERCAPTOPROPIONATE",
          "stdName": "(+/-)-PROPYL 2-MERCAPTOPROPIONATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "0852d5df-d716-4713-9518-b0fa0f41a6f2",
            "eb782ab2-cd96-455a-bf63-f344635a5211"
          ],
          "display_name": false
        },
        {
          "uuid": "6ca18750-bfa1-48e8-bd75-8c34cf4bf997",
          "name": "FEMA NO. 4207",
          "stdName": "FEMA NO. 4207",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "1da74a0f-4c5e-466f-b846-852348254905",
            "eb782ab2-cd96-455a-bf63-f344635a5211"
          ],
          "display_name": false
        },
        {
          "uuid": "ecfddb41-ceec-4576-92e1-1c9372bba1a4",
          "name": "PROPANOIC ACID, 2-MERCAPTO-, PROPYL ESTER",
          "stdName": "PROPANOIC ACID, 2-MERCAPTO-, PROPYL ESTER",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "eb782ab2-cd96-455a-bf63-f344635a5211",
            "d16b64b8-6fe5-4073-811b-e684336e9f18"
          ],
          "display_name": false
        },
        {
          "uuid": "bac35615-9462-47dc-a8b5-76a4ebb87982",
          "name": "PROPIONIC ACID, 2-MERCAPTO-, PROPYL ESTER",
          "stdName": "PROPIONIC ACID, 2-MERCAPTO-, PROPYL ESTER",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "eb782ab2-cd96-455a-bf63-f344635a5211",
            "d16b64b8-6fe5-4073-811b-e684336e9f18"
          ],
          "display_name": false
        },
        {
          "uuid": "8daa4435-0c53-475d-9c37-a3afe3410e7e",
          "name": "PROPYL 2-MERCAPTOPROPIONATE",
          "stdName": "PROPYL 2-MERCAPTOPROPIONATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5c474503-11ad-44ba-95e4-fefb29ce5148",
            "7011e49d-a4ae-4875-84fe-771d90e256a2",
            "eb782ab2-cd96-455a-bf63-f344635a5211",
            "d16b64b8-6fe5-4073-811b-e684336e9f18"
          ],
          "display_name": true
        },
        {
          "uuid": "7b3a61b1-b84f-4df5-a251-dc213dd5004d",
          "name": "PROPYL 2-MERCAPTOPROPIONATE [FHFI]",
          "stdName": "PROPYL 2-MERCAPTOPROPIONATE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "eb782ab2-cd96-455a-bf63-f344635a5211",
            "d16b64b8-6fe5-4073-811b-e684336e9f18"
          ],
          "display_name": false
        },
        {
          "uuid": "87b57e2d-95a3-410a-aaa5-e20ebb3b92ea",
          "name": "PROPYL 2-MERCAPTOPROPIONATE, (±)-",
          "stdName": "PROPYL 2-MERCAPTOPROPIONATE, (+/-)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "0852d5df-d716-4713-9518-b0fa0f41a6f2",
            "eb782ab2-cd96-455a-bf63-f344635a5211"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "5c474503-11ad-44ba-95e4-fefb29ce5148",
          "citation": "JECFA",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "eb782ab2-cd96-455a-bf63-f344635a5211",
          "citation": "JECFA: JOINT FAO/WHO COMMITTEE FOOD ADD",
          "doc_type": "JECFA: JOINT FAO/WHO COMMITTEE FOOD ADD",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "d16b64b8-6fe5-4073-811b-e684336e9f18",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "1da74a0f-4c5e-466f-b846-852348254905",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "0852d5df-d716-4713-9518-b0fa0f41a6f2",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "89d08053-2b72-439c-ae75-1fa6d73243c0",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391408000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "9faf5171-d71a-4d3f-8b32-76de53203d94",
          "citation": "SRS import [A6API9I47Z]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=A6API9I47Z",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391408000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "7011e49d-a4ae-4875-84fe-771d90e256a2",
          "citation": "PROPYL 2-MERCAPTOPROPIONATE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "f5ad210a-5538-4683-99f3-a6585ba9895e",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "2d3ce351-1c83-deff-8ab1-506550277d61",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        },
        {
          "uuid": "dc5e60f1-b85b-eef2-9ca1-12d013d3b5e4",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "b3f74818-585f-455f-8bfa-0258fac51eb7",
          "id": "b3f74818-585f-455f-8bfa-0258fac51eb7",
          "molfile": "\n  Marvin  01132109192D          \n\n  9  8  0  0  0  0            999 V2000\n   13.8890   -3.9430    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.4765   -4.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.6515   -4.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.2390   -5.3720    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   11.4140   -5.3720    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.0015   -4.6575    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   11.0015   -6.0865    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n   11.4140   -6.8009    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.1765   -6.0865    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  3  4  1  0  0  0  0\n  5  4  1  0  0  0  0\n  5  6  2  0  0  0  0\n  5  7  1  0  0  0  0\n  7  8  1  0  0  0  0\n  9  7  1  0  0  0  0\nM  END",
          "smiles": "CCCOC(=O)C(C)S",
          "formula": "C6H12O2S",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "d22b6c66-8882-4ce7-881d-13a12135de04"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "148.2246",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "dc73041d-0c36-4683-bb00-801f56f83737",
      "version": "6",
      "structure": {
        "id": "ed9504ea-3215-4195-a3bc-f3e26b0302f1",
        "molfile": "\n  Marvin  01132112172D          \n\n  9  8  0  0  0  0            999 V2000\n   12.2390   -5.3720    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   11.0015   -4.6575    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   11.4140   -6.8009    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.0015   -6.0865    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.4140   -5.3720    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.1765   -6.0865    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n   13.8890   -3.9430    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.4765   -4.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.6515   -4.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  9  1  1  0  0  0  0\n  6  4  1  0  0  0  0\n  5  1  1  0  0  0  0\n  5  2  2  0  0  0  0\n  4  3  1  0  0  0  0\n  5  4  1  0  0  0  0\n  8  7  1  0  0  0  0\n  9  8  1  0  0  0  0\nM  END",
        "smiles": "CCCOC(=O)C(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": [
          "9faf5171-d71a-4d3f-8b32-76de53203d94",
          "d16b64b8-6fe5-4073-811b-e684336e9f18"
        ],
        "stereo_centers": 1
      },
      "unii": "A6API9I47Z"
    }
  ]
}