{
  "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": "379497c0-cf17-4445-a2b4-baef841c3ccd",
          "code": "600-14-6",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=600-14-6",
          "code_system": "CAS",
          "references": [
            "aaa56de6-0c8e-45c3-a2a0-d018ae539c61",
            "1335246c-7161-4ca2-a19d-f03f6159443c"
          ]
        },
        {
          "uuid": "89b6165d-f038-4f59-9513-18e0a33fa041",
          "code": "C013186",
          "type": "PRIMARY",
          "url": "http://www.ncbi.nlm.nih.gov/mesh/67013186",
          "code_system": "MESH",
          "references": [
            "aaa56de6-0c8e-45c3-a2a0-d018ae539c61"
          ]
        },
        {
          "uuid": "45696c68-63e3-4241-9c3d-00dd59767dac",
          "code": "21 CFR 172.515",
          "comments": "PART 172 -- FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION|Subpart F--Flavoring Agents and Related Substances|Sec. 172.515 Synthetic flavoring substances and adjuvants.",
          "type": "PRIMARY",
          "url": "http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfCFR/CFRSearch.cfm?fr=172.515",
          "code_system": "CFR",
          "references": [
            "aaa56de6-0c8e-45c3-a2a0-d018ae539c61"
          ]
        },
        {
          "uuid": "5cdb7936-dda4-4b8f-94dc-4e0816f1767d",
          "code": "209-984-8",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.009.078",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "aaa56de6-0c8e-45c3-a2a0-d018ae539c61"
          ]
        },
        {
          "uuid": "4e44bbb5-5886-4d19-876c-219440588a01",
          "code": "11747",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/11747",
          "code_system": "PUBCHEM",
          "references": [
            "aaa56de6-0c8e-45c3-a2a0-d018ae539c61"
          ]
        },
        {
          "uuid": "8c1622c3-74c2-342d-e5e0-9e366895c017",
          "code": "8326",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/source/hsdb/8326",
          "code_system": "HSDB",
          "references": [
            "777b401c-6731-66a8-fb48-d539be8321fc"
          ]
        },
        {
          "uuid": "ae45a0e7-7eac-6e16-bd30-1a3b97fdd0b8",
          "code": "DTXSID6051435",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID6051435",
          "code_system": "EPA CompTox",
          "references": [
            "489046db-f52a-e53c-1b9e-153e513aa010"
          ]
        },
        {
          "uuid": "20948ee2-0a40-47ca-a053-030acfb9c788",
          "code": "K4WBE45SCM",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "4a5afb21-7a6e-6663-5367-f64821c01573",
          "code": "52774",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:52774",
          "code_system": "CHEBI",
          "references": [
            "e6708730-0b64-c1f1-4977-9d360f25adb1"
          ]
        },
        {
          "uuid": "92a9178f-1819-5c9e-71d6-e19e5055052f",
          "code": "Acetylpropionyl",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Acetylpropionyl",
          "code_system": "WIKIPEDIA",
          "references": [
            "9f6e8a5b-18b1-378b-71ac-2702d9fafbb1"
          ]
        },
        {
          "uuid": "f055f193-2f7e-433c-1dfd-f06f0d04c500",
          "code": "100000173989",
          "type": "PRIMARY",
          "code_system": "SMS_ID",
          "references": [
            "42f94b09-7a41-cea0-48e4-bea468dac00e"
          ]
        },
        {
          "uuid": "c82436e4-a103-7ced-ed28-e0af005dd5d7",
          "code": "7613",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=7613",
          "code_system": "NSC",
          "references": [
            "7376d1f2-9f53-2f73-b514-9c299291db7f"
          ]
        },
        {
          "uuid": "4daa8d7d-a35d-8c74-7646-9ab4bb542a61",
          "code": "331",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/331/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "822e9ab4-4567-33b1-2192-37a252058ac7"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "9ea71938-dac3-4b6d-be34-8a3f50424151",
          "name": "2,3-PENTANEDIONE",
          "stdName": "2,3-PENTANEDIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8c5f8a0a-1658-4666-994b-b2cbe656f17b",
            "e05c9993-4443-4ba1-b2a7-88cab85dcb57",
            "e9034659-6a1d-4b67-aec8-71a0571cecf2",
            "3dcac13b-5b4f-43c8-a65d-e1325b66892c",
            "5b40590d-a2ff-442b-8337-f5b1de9dbdc5",
            "c990521b-2400-42c3-b862-5bce1aecbaa2"
          ],
          "display_name": true
        },
        {
          "uuid": "623e1d60-2876-40dc-9348-97b80190699e",
          "name": "2,3-PENTANEDIONE [FCC]",
          "stdName": "2,3-PENTANEDIONE [FCC]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e9034659-6a1d-4b67-aec8-71a0571cecf2",
            "3dcac13b-5b4f-43c8-a65d-e1325b66892c"
          ],
          "display_name": false
        },
        {
          "uuid": "47c5dd95-8048-4ad5-b38b-a9fd760439db",
          "name": "2,3-PENTANEDIONE [FHFI]",
          "stdName": "2,3-PENTANEDIONE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e9034659-6a1d-4b67-aec8-71a0571cecf2",
            "c990521b-2400-42c3-b862-5bce1aecbaa2"
          ],
          "display_name": false
        },
        {
          "uuid": "bfecd37f-78de-42d2-896e-8653cf17a56c",
          "name": "ACETYL PROPIONYL",
          "stdName": "ACETYL PROPIONYL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e9034659-6a1d-4b67-aec8-71a0571cecf2",
            "79b5fa26-38ef-4f6b-9c72-ccba4a66eddc"
          ],
          "display_name": false
        },
        {
          "uuid": "d19c3bac-faeb-4b1a-8689-39660c606aba",
          "name": "ACETYLPROPIONYL",
          "stdName": "ACETYLPROPIONYL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e05c9993-4443-4ba1-b2a7-88cab85dcb57",
            "e9034659-6a1d-4b67-aec8-71a0571cecf2"
          ],
          "display_name": false
        },
        {
          "uuid": "31deff72-592a-40bd-aec5-fcc6906374f1",
          "name": "FEMA NO. 2841",
          "stdName": "FEMA NO. 2841",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "d5e7eb5d-4cc9-477f-b7a5-0d6ea5807698",
            "e9034659-6a1d-4b67-aec8-71a0571cecf2"
          ],
          "display_name": false
        },
        {
          "uuid": "f8c95d1f-a7d0-4dba-a1ad-4e2b982f3fc5",
          "name": "NSC-7613",
          "stdName": "NSC-7613",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "d5e7eb5d-4cc9-477f-b7a5-0d6ea5807698",
            "e9034659-6a1d-4b67-aec8-71a0571cecf2"
          ],
          "display_name": false
        },
        {
          "uuid": "39cf39f1-9fa2-431a-864e-73b7c2251dd2",
          "name": "PENTANE-2,3-DIONE",
          "stdName": "PENTANE-2,3-DIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e05c9993-4443-4ba1-b2a7-88cab85dcb57",
            "e9034659-6a1d-4b67-aec8-71a0571cecf2"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "e05c9993-4443-4ba1-b2a7-88cab85dcb57",
          "citation": "DOSE",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "e9034659-6a1d-4b67-aec8-71a0571cecf2",
          "citation": "DOSE",
          "doc_type": "DOSE",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "d5e7eb5d-4cc9-477f-b7a5-0d6ea5807698",
          "citation": "ChemID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "c990521b-2400-42c3-b862-5bce1aecbaa2",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3dcac13b-5b4f-43c8-a65d-e1325b66892c",
          "citation": "FCC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "79b5fa26-38ef-4f6b-9c72-ccba4a66eddc",
          "citation": "YES",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "aaa56de6-0c8e-45c3-a2a0-d018ae539c61",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390827000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "32ef437e-24c6-40eb-b856-8ce6ab9b2c65",
          "citation": "AN OVERVIEW OF THE EFFECTS OF TOBACCO INGREDIENTS ON SMOKE CHEMISTRY AND TOXICITY; FOOD AND CHEMICAL TOXICOLOGY; BAKER, RR; 42(SUPPL):53-83, 2004",
          "url": "http://www.sciencedirect.com/science/article/pii/S0278691504000043",
          "doc_type": "JOURNAL ARTICLE",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "abfb3c17-7dc8-4e5e-aaae-d7ddd077c363",
          "citation": "SRS import [K4WBE45SCM]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=K4WBE45SCM",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390827000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8c5f8a0a-1658-4666-994b-b2cbe656f17b",
          "citation": "2,3-PENTANEDIONE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "5b40590d-a2ff-442b-8337-f5b1de9dbdc5",
          "citation": "2,3-PENTANEDIONE [FCC]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "777b401c-6731-66a8-fb48-d539be8321fc",
          "citation": "WEBSITE",
          "url": "https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+600-14-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "489046db-f52a-e53c-1b9e-153e513aa010",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=600-14-6",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "9f6e8a5b-18b1-378b-71ac-2702d9fafbb1",
          "citation": "WIKI",
          "doc_type": "WIKI",
          "public_domain": true
        },
        {
          "uuid": "e6708730-0b64-c1f1-4977-9d360f25adb1",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "1335246c-7161-4ca2-a19d-f03f6159443c",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "822e9ab4-4567-33b1-2192-37a252058ac7",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        },
        {
          "uuid": "7376d1f2-9f53-2f73-b514-9c299291db7f",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "42f94b09-7a41-cea0-48e4-bea468dac00e",
          "citation": "EU-SRS",
          "doc_type": "EMA LIST",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "15333abb-c68e-4215-9b42-94c6f52450fb",
          "id": "15333abb-c68e-4215-9b42-94c6f52450fb",
          "molfile": "\n  Marvin  01132101182D          \n\n  7  6  0  0  0  0            999 V2000\n    1.9884   -5.3523    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7029   -4.9398    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4174   -5.3523    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4174   -6.1773    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1317   -4.9398    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1317   -4.1149    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8462   -5.3523    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  1  0  0  0  0\n  3  4  2  0  0  0  0\n  3  5  1  0  0  0  0\n  5  6  1  0  0  0  0\n  5  7  2  0  0  0  0\nM  END",
          "smiles": "CCC(=O)C(=O)C",
          "formula": "C5H8O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "79f45c9d-9656-446e-982f-951d97cbfe76"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "100.116",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "733285f6-e5a5-48f4-8d49-5e92fc1ea14b",
      "version": "9",
      "structure": {
        "id": "a14ec21a-f7f5-441b-86aa-235148d6d687",
        "molfile": "\n  Marvin  01132108232D          \n\n  7  6  0  0  0  0            999 V2000\n    1.9884   -5.3523    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7029   -4.9398    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4174   -5.3523    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1317   -4.9398    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1317   -4.1149    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8462   -5.3523    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4174   -6.1773    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  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\n  3  7  2  0  0  0  0\nM  END",
        "smiles": "CCC(=O)C(=O)C",
        "formula": "C5H8O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "100.116",
        "optical_activity": "NONE",
        "references": [
          "e05c9993-4443-4ba1-b2a7-88cab85dcb57",
          "abfb3c17-7dc8-4e5e-aaae-d7ddd077c363"
        ],
        "stereo_centers": 0
      },
      "unii": "K4WBE45SCM"
    }
  ]
}