{
  "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": "0f2a4bd0-8be0-43ae-a1cd-1cdc2a4c4c5e",
          "code": "1-METHYL-2,3-CYCLOHEXADIONE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=1739",
          "code_system": "JECFA EVALUATION",
          "references": [
            "b2118cf4-b64e-4f9b-bb1f-15c54d58db74"
          ]
        },
        {
          "uuid": "7e26ab25-ab0b-49db-8bf9-0350536dcddd",
          "code": "3008-43-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=3008-43-3",
          "code_system": "CAS",
          "references": [
            "b2118cf4-b64e-4f9b-bb1f-15c54d58db74",
            "b9cdc578-ac73-4e64-aec5-f1804a8d7b1e"
          ]
        },
        {
          "uuid": "001868be-72b8-487b-a5a7-090de0c17ca3",
          "code": "221-122-2",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.019.203",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "b2118cf4-b64e-4f9b-bb1f-15c54d58db74"
          ]
        },
        {
          "uuid": "7dfd7c9e-d3d2-4a1d-9ad4-8c38dc1e6284",
          "code": "3321360",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/3321360",
          "code_system": "PUBCHEM",
          "references": [
            "b2118cf4-b64e-4f9b-bb1f-15c54d58db74"
          ]
        },
        {
          "uuid": "b06396fe-407c-490f-73cb-575ec56eace0",
          "code": "DTXSID9047675",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID9047675",
          "code_system": "EPA CompTox",
          "references": [
            "75012402-0448-a68e-f5ec-518f4a55dfab"
          ]
        },
        {
          "uuid": "0321ad74-418d-4011-b0b0-ad98b5b1ceb3",
          "code": "2GKY1ALK5L",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "4d4a8e68-5bdb-ae33-76d4-f65d3a798548",
          "code": "431",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/431/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "491b8e74-4802-0aac-6eba-30dddf0543a2"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "57821430-02b3-41ff-b095-d3fcc867f9b8",
          "name": "(±)-3-METHYL-1,2-CYCLOHEXANEDIONE",
          "stdName": "(+/-)-3-METHYL-1,2-CYCLOHEXANEDIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "6a27d510-f8f7-4fd1-b628-442e850f2e34",
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324"
          ],
          "display_name": false
        },
        {
          "uuid": "024a874d-1191-4a78-afe4-c21d0e33f727",
          "name": "1,2-CYCLOHEXANEDIONE, 3-METHYL-",
          "stdName": "1,2-CYCLOHEXANEDIONE, 3-METHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "abc72b65-40e0-4fea-b2af-9c862f8743ff",
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324"
          ],
          "display_name": false
        },
        {
          "uuid": "2050a68d-c2e0-4dc9-858b-117ffb4a2b24",
          "name": "1-METHYL-2,3-CYCLOHEXADIONE",
          "stdName": "1-METHYL-2,3-CYCLOHEXADIONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ad006910-d27c-4963-bfea-9057d10fea5d",
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324",
            "f40c1e45-f717-4b5b-8fad-46252bfa475e",
            "abae17f6-acef-4345-803f-38ac4e497dfa"
          ],
          "display_name": true
        },
        {
          "uuid": "f657fdf1-b9a0-45d1-9e1e-b19fa9f41ad7",
          "name": "1-METHYL-2,3-CYCLOHEXADIONE [FHFI]",
          "stdName": "1-METHYL-2,3-CYCLOHEXADIONE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324",
            "f40c1e45-f717-4b5b-8fad-46252bfa475e"
          ],
          "display_name": false
        },
        {
          "uuid": "86a8eec3-414b-4aae-b7d1-99cb9750c787",
          "name": "1-METHYLCYCLOHEXA-2,3-DIONE",
          "stdName": "1-METHYLCYCLOHEXA-2,3-DIONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ad006910-d27c-4963-bfea-9057d10fea5d",
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324"
          ],
          "display_name": false
        },
        {
          "uuid": "b5a8042b-b022-4e8c-a9a2-540e637918f0",
          "name": "3-METHYL-1,2-CYCLOHEXANEDIONE",
          "stdName": "3-METHYL-1,2-CYCLOHEXANEDIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324",
            "d5b146ba-04ce-4b62-95f2-ce6362a0b3b4"
          ],
          "display_name": false
        },
        {
          "uuid": "a462375f-85ac-4abc-82e5-7f3590da2d1f",
          "name": "3-METHYLCYCLOHEXANE-1,2-DIONE",
          "stdName": "3-METHYLCYCLOHEXANE-1,2-DIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "aa2e524c-73dc-43ce-93ba-6e1be7dab4e6",
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324"
          ],
          "display_name": false
        },
        {
          "uuid": "f6c87380-7d40-44d0-b29d-b9f245ae6322",
          "name": "COFFEE DIONE",
          "stdName": "COFFEE DIONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324",
            "1f6e916b-0770-40c1-8a98-6faefeac4d47"
          ],
          "display_name": false
        },
        {
          "uuid": "131dca93-155a-490d-9f0d-de0d3e737dd5",
          "name": "FEMA NO. 3305",
          "stdName": "FEMA NO. 3305",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2a47cc4d-74f6-48a4-80f0-e713c6ce7324",
            "d5b146ba-04ce-4b62-95f2-ce6362a0b3b4"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "d5b146ba-04ce-4b62-95f2-ce6362a0b3b4",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "2a47cc4d-74f6-48a4-80f0-e713c6ce7324",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "6a27d510-f8f7-4fd1-b628-442e850f2e34",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "abc72b65-40e0-4fea-b2af-9c862f8743ff",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ad006910-d27c-4963-bfea-9057d10fea5d",
          "citation": "JECFA",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "1f6e916b-0770-40c1-8a98-6faefeac4d47",
          "citation": "GRAS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "f40c1e45-f717-4b5b-8fad-46252bfa475e",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "aa2e524c-73dc-43ce-93ba-6e1be7dab4e6",
          "citation": "TOX 21",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b2118cf4-b64e-4f9b-bb1f-15c54d58db74",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391005000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "36a1f775-4fe1-4a7e-8baa-2b0554716f88",
          "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": "7b0089de-9d37-4e64-8057-2359971662fe",
          "citation": "SRS import [2GKY1ALK5L]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=2GKY1ALK5L",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391005000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "abae17f6-acef-4345-803f-38ac4e497dfa",
          "citation": "1-METHYL-2,3-CYCLOHEXADIONE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "75012402-0448-a68e-f5ec-518f4a55dfab",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=3008-43-3",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "b9cdc578-ac73-4e64-aec5-f1804a8d7b1e",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "491b8e74-4802-0aac-6eba-30dddf0543a2",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "bae02ecf-f4bb-4657-a537-78133b9ab9a2",
          "id": "bae02ecf-f4bb-4657-a537-78133b9ab9a2",
          "molfile": "\n  Marvin  01132109402D          \n\n  9  9  0  0  0  0            999 V2000\n    3.3867   -3.5213    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6803   -3.1018    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    1.9699   -3.5055    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2536   -3.0860    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2536   -2.2766    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9699   -1.8571    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9699   -1.0379    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6803   -2.2766    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.3907   -1.8690    0.0000 O   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  8  2  1  0  0  0  0\n  3  4  1  0  0  0  0\n  5  4  1  0  0  0  0\n  6  5  1  0  0  0  0\n  6  7  2  0  0  0  0\n  8  6  1  0  0  0  0\n  8  9  2  0  0  0  0\nM  END",
          "smiles": "CC1CCCC(=O)C1=O",
          "formula": "C7H10O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "f0795aff-8a70-4ccd-a083-a8e8f3dfb2cc"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "126.1534",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "cbd0b8dc-8f4f-413b-869f-f756289148ac",
      "version": "4",
      "structure": {
        "id": "b0a6a20f-276d-421b-9a43-f7017b465cb4",
        "molfile": "\n  Marvin  01132109092D          \n\n  9  9  0  0  0  0            999 V2000\n    1.2536   -3.0860    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9699   -1.0379    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2536   -2.2766    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.3867   -3.5213    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9699   -3.5055    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.3907   -1.8690    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9699   -1.8571    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6803   -3.1018    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6803   -2.2766    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  3  1  1  0  0  0  0\n  5  1  1  0  0  0  0\n  7  2  2  0  0  0  0\n  7  3  1  0  0  0  0\n  8  4  1  0  0  0  0\n  8  5  1  0  0  0  0\n  9  6  2  0  0  0  0\n  9  7  1  0  0  0  0\n  9  8  1  0  0  0  0\nM  END",
        "smiles": "CC1CCCC(=O)C1=O",
        "formula": "C7H10O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "RACEMIC",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "126.1534",
        "optical_activity": "( + / - )",
        "references": [
          "abc72b65-40e0-4fea-b2af-9c862f8743ff",
          "7b0089de-9d37-4e64-8057-2359971662fe"
        ],
        "stereo_centers": 1
      },
      "unii": "2GKY1ALK5L"
    }
  ]
}