{
  "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": "26515516-e0e7-44ef-8936-f23fd8212259",
          "code": "36871-78-0",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=36871-78-0",
          "code_system": "CAS",
          "references": [
            "b2d02ce9-8552-40f4-abee-54f1ae13d82a",
            "27514493-2272-43a6-89c3-af37a2b2ca56"
          ]
        },
        {
          "uuid": "4728918f-8f02-4a49-8a01-c17201c6a363",
          "code": "53426546",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/53426546",
          "code_system": "PUBCHEM",
          "references": [
            "b2d02ce9-8552-40f4-abee-54f1ae13d82a"
          ]
        },
        {
          "uuid": "e169a2ce-a97b-0ea9-3b74-a515f2940fad",
          "code": "DTXSID00958072",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID00958072",
          "code_system": "EPA CompTox",
          "references": [
            "75755c9f-e1c1-9f69-dd57-caa7e905c087"
          ]
        },
        {
          "uuid": "2fbb4982-e14c-4095-8952-c42632434958",
          "code": "Y1BRB2IA9F",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "ed843ad0-bf23-424d-ac01-271ec7a7c807",
          "name": "3(2H)-FURANONE, 4-ACETYL-2,5-DIMETHYL-",
          "stdName": "3(2H)-FURANONE, 4-ACETYL-2,5-DIMETHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "05db4c76-09ca-4b35-a90a-b034f5c24881"
          ],
          "display_name": false
        },
        {
          "uuid": "adf00ef9-aacb-4560-a45f-6d10fc95bf2f",
          "name": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE",
          "stdName": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "25bdb038-9061-423c-a3f4-34a77a2e3f76",
            "8c849de5-8dd1-4e44-bd99-3198c410f447",
            "e9fcbd95-face-4d42-ba72-7fb5095b1554"
          ],
          "display_name": true
        },
        {
          "uuid": "e6b1d9da-4040-404d-b0bd-93a5794c0026",
          "name": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE [FHFI]",
          "stdName": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e9fcbd95-face-4d42-ba72-7fb5095b1554"
          ],
          "display_name": false
        },
        {
          "uuid": "404b7abc-9cce-41f2-8921-913f9d69f862",
          "name": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE, (±)-",
          "stdName": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE, (+/-)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6c38464-fdf5-41b1-aa2c-7b2cfcc7bebb"
          ],
          "display_name": false
        },
        {
          "uuid": "cc97fefa-5d83-4823-a366-1cf299022240",
          "name": "4-ACETYL-2,5-DIMETHYLFURAN-3(2H)-ONE",
          "stdName": "4-ACETYL-2,5-DIMETHYLFURAN-3(2H)-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2decfc83-c598-4fe3-aae1-7400e074a55b"
          ],
          "display_name": false
        },
        {
          "uuid": "d2c72e55-8486-4102-9bae-8173bd5d3c04",
          "name": "FEMA NO. 4070",
          "stdName": "FEMA NO. 4070",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8c849de5-8dd1-4e44-bd99-3198c410f447"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "b6c38464-fdf5-41b1-aa2c-7b2cfcc7bebb",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "8c849de5-8dd1-4e44-bd99-3198c410f447",
          "citation": "FARM",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "05db4c76-09ca-4b35-a90a-b034f5c24881",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "e9fcbd95-face-4d42-ba72-7fb5095b1554",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2decfc83-c598-4fe3-aae1-7400e074a55b",
          "citation": "EC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b2d02ce9-8552-40f4-abee-54f1ae13d82a",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390918000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "af676dab-edcb-43ff-8d38-fad2d0ac7730",
          "citation": "SRS import [Y1BRB2IA9F]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=Y1BRB2IA9F",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390918000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "25bdb038-9061-423c-a3f4-34a77a2e3f76",
          "citation": "4-ACETYL-2,5-DIMETHYL-3(2H)-FURANONE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "27514493-2272-43a6-89c3-af37a2b2ca56",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "75755c9f-e1c1-9f69-dd57-caa7e905c087",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "7555915c-1729-4e29-a6b8-a2ad86cc53fa",
          "id": "7555915c-1729-4e29-a6b8-a2ad86cc53fa",
          "molfile": "\n  Marvin  01132106052D          \n\n 11 11  0  0  0  0            999 V2000\n    5.0766   -4.1553    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.8613   -4.4100    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    6.5271   -3.9226    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.1973   -4.4100    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.9823   -4.1560    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9402   -5.1952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4243   -5.8631    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.0880   -6.6163    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2448   -5.7778    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.1142   -5.1952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.6284   -5.8619    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  3  2  1  0  0  0  0\n  2 10  1  0  0  0  0\n  3  4  1  0  0  0  0\n  5  4  1  0  0  0  0\n  6  4  2  0  0  0  0\n  7  6  1  0  0  0  0\n 10  6  1  0  0  0  0\n  7  8  1  0  0  0  0\n  7  9  2  0  0  0  0\n 10 11  2  0  0  0  0\nM  END",
          "smiles": "CC(=O)C1=C(C)OC(C)C1=O",
          "formula": "C8H10O3",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "cb910779-41ab-4639-a5b8-479f657482c6"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "154.1635",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "ae81f059-21c4-4d9f-8ca0-4beb54013669",
      "version": "5",
      "structure": {
        "id": "9b845911-2b5c-4f2e-9029-f2e8426a1ab8",
        "molfile": "\n  Marvin  01132108052D          \n\n 11 11  0  0  0  0            999 V2000\n    5.6284   -5.8619    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.1973   -4.4100    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9402   -5.1952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.1142   -5.1952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.8613   -4.4100    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5271   -3.9226    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    5.0766   -4.1553    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.9823   -4.1560    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2448   -5.7778    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.0880   -6.6163    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.4243   -5.8631    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n 11  3  1  0  0  0  0\n  8  2  1  0  0  0  0\n  7  5  1  0  0  0  0\n  4  1  2  0  0  0  0\n  6  2  1  0  0  0  0\n  3  2  2  0  0  0  0\n  4  3  1  0  0  0  0\n  5  4  1  0  0  0  0\n  6  5  1  0  0  0  0\n 11  9  2  0  0  0  0\n 11 10  1  0  0  0  0\nM  END",
        "smiles": "CC(=O)C1=C(C)OC(C)C1=O",
        "formula": "C8H10O3",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "RACEMIC",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "154.1635",
        "optical_activity": "( + / - )",
        "references": [
          "05db4c76-09ca-4b35-a90a-b034f5c24881",
          "af676dab-edcb-43ff-8d38-fad2d0ac7730"
        ],
        "stereo_centers": 1
      },
      "unii": "Y1BRB2IA9F"
    }
  ]
}