{
  "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": "733e47c6-9210-428c-a100-d28b1a566315",
          "code": "544409-58-7",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=544409-58-7",
          "code_system": "CAS",
          "references": [
            "1bf173a3-a467-49ad-b47a-b52b201a64cf",
            "fe574123-4871-49e1-91dc-049ac51cac64"
          ]
        },
        {
          "uuid": "5fcdb641-2ba8-49fd-919b-5a1c818a5c62",
          "code": "12003251",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/12003251",
          "code_system": "PUBCHEM",
          "references": [
            "317fe543-6696-d908-13ab-c27535292e47"
          ]
        },
        {
          "uuid": "4a73edd3-c705-4f6d-941e-a96ca3b59082",
          "code": "KR08256859",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "e13db438-9280-522e-e82b-f0ecc0e97547",
          "name": "2,4-NONANEDIONE, 3-HYDROXY-3-METHYL-, (3R)-",
          "stdName": "2,4-NONANEDIONE, 3-HYDROXY-3-METHYL-, (3R)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "56170e87-7a00-e013-4516-088b0b38cc0a",
            "fe574123-4871-49e1-91dc-049ac51cac64"
          ],
          "display_name": false
        },
        {
          "uuid": "13ea085b-2f7c-e668-b539-313b07ea3fe9",
          "name": "2,4-NONANEDIONE, 3-HYDROXY-3-METHYL-, (3S)-",
          "stdName": "2,4-NONANEDIONE, 3-HYDROXY-3-METHYL-, (3S)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "fe574123-4871-49e1-91dc-049ac51cac64"
          ],
          "display_name": false
        },
        {
          "uuid": "48897162-0213-49c1-8837-13902123a45f",
          "name": "3-HYDROXY-3-METHYL-2,4-NONANEDIONE",
          "stdName": "3-HYDROXY-3-METHYL-2,4-NONANEDIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5519e6e8-77f5-4240-832a-eeceec154c26"
          ],
          "display_name": true
        },
        {
          "uuid": "1708fd3f-9f7c-978c-eb82-e35f73721528",
          "name": "FEMA NO. 4687",
          "stdName": "FEMA NO. 4687",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "56170e87-7a00-e013-4516-088b0b38cc0a"
          ],
          "display_name": false
        },
        {
          "uuid": "818394fa-0b3b-0ccf-d9d9-550503d33d51",
          "name": "LACTADIONE",
          "stdName": "LACTADIONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "56170e87-7a00-e013-4516-088b0b38cc0a"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "5519e6e8-77f5-4240-832a-eeceec154c26",
          "citation": "CFSAN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "1bf173a3-a467-49ad-b47a-b52b201a64cf",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493394375000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "56170e87-7a00-e013-4516-088b0b38cc0a",
          "citation": "FHFI",
          "doc_type": "HANDBOOK OF FLAVOR INGREDIENTS",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE",
            "NOMEN"
          ]
        },
        {
          "uuid": "fe574123-4871-49e1-91dc-049ac51cac64",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "317fe543-6696-d908-13ab-c27535292e47",
          "citation": "PUBCHEM",
          "doc_type": "PUBCHEM",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "8f4ca579-afc2-4f0a-b106-b6ea97d80ebb",
          "id": "8f4ca579-afc2-4f0a-b106-b6ea97d80ebb",
          "molfile": "\n  Marvin  01132107262D          \n\n 13 12  0  0  0  0            999 V2000\n    4.8380   -6.9491    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1234   -6.5366    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1234   -5.7116    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4090   -5.2991    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4090   -4.4741    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6945   -4.0616    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9801   -4.4741    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6945   -3.2366    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    3.5195   -3.2366    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.8695   -3.2366    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6945   -2.4116    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.4090   -1.9991    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9801   -1.9991    0.0000 O   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  4  3  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  9  8  1  0  0  0  0\n 10  8  1  0  0  0  0\n 11  8  1  0  0  0  0\n 12 11  1  0  0  0  0\n 11 13  2  0  0  0  0\nM  END",
          "smiles": "CCCCCC(=O)C(C)(C(=O)C)O",
          "formula": "C10H18O3",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "4330bef4-67c6-4891-a1d5-4fc97c30bb28"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "186.2485",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "INCOMPLETE",
      "uuid": "01d979f3-a85c-4740-adf3-24b9c54ed4d1",
      "version": "8",
      "structure": {
        "id": "115fbce5-dcb7-4211-b7c7-217191db0dc9",
        "molfile": "2,4-Nonanedione, 3-hydroxy-3-methyl-\n  Marvin  01132101072D          \n\n 13 12  0  0  0  0            999 V2000\n   13.9778   -4.3923    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.6220   -3.8769    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.3400   -3.8769    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.3515   -5.2942    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.6106   -5.2942    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   15.2663   -4.3923    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.6220   -2.8461    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   12.6958   -4.3923    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.3400   -2.8461    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   15.8977   -3.8769    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.5419   -4.3923    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.1861   -3.8769    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.8303   -4.3923    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  1  3  1  0  0  0  0\n  1  4  1  0  0  0  0\n  1  5  1  0  0  0  0\n  2  6  1  0  0  0  0\n  2  7  2  0  0  0  0\n  3  8  1  0  0  0  0\n  3  9  2  0  0  0  0\n  6 10  1  0  0  0  0\n 10 11  1  0  0  0  0\n 11 12  1  0  0  0  0\n 12 13  1  0  0  0  0\nM  END",
        "smiles": "CCCCCC(=O)C(C)(C(=O)C)O",
        "formula": "C10H18O3",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "RACEMIC",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "186.2485",
        "optical_activity": "( + / - )",
        "references": [
          "5519e6e8-77f5-4240-832a-eeceec154c26"
        ],
        "stereo_centers": 1
      },
      "unii": "KR08256859"
    }
  ]
}