{
  "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": "d8f53232-2f80-4e14-880e-2eab0e1f73ef",
          "code": "1629-60-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=1629-60-3",
          "code_system": "CAS",
          "references": [
            "8b0c4d95-5af5-4d4e-84c4-bf57abb93864",
            "1264c186-f3ef-4b57-833f-ea4131c86850"
          ]
        },
        {
          "uuid": "255bce42-1b32-4c3c-a2f5-be9b9d3a09e4",
          "code": "216-625-9",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.015.115",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "8b0c4d95-5af5-4d4e-84c4-bf57abb93864"
          ]
        },
        {
          "uuid": "ffd324a3-3da9-483a-a5bd-ce8a1f8432f5",
          "code": "15395",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/15395",
          "code_system": "PUBCHEM",
          "references": [
            "8b0c4d95-5af5-4d4e-84c4-bf57abb93864"
          ]
        },
        {
          "uuid": "c6b509b5-7ef4-ded9-0289-677f4a0adce3",
          "code": "DTXSID0075102",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID0075102",
          "code_system": "EPA CompTox",
          "references": [
            "5ce2b6ff-b520-dcc3-d689-e8f659477461"
          ]
        },
        {
          "uuid": "1a3835c6-b98a-48b7-bb83-e0acb4baaf3b",
          "code": "QH9D98Z86N",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "a531ab64-b82f-4e53-951c-6003b96ee502",
          "name": "1-HEXEN-3-ONE",
          "stdName": "1-HEXEN-3-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "a698713e-76be-43e8-b6cb-369b878c032c",
            "fa5896e5-77a2-4774-ae6f-a74787f9df91"
          ],
          "display_name": true
        },
        {
          "uuid": "aff9ed04-a5a6-4f66-b737-06693baf8ef0",
          "name": "HEX-1-EN-3-ONE",
          "stdName": "HEX-1-EN-3-ONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "a698713e-76be-43e8-b6cb-369b878c032c",
            "fa5896e5-77a2-4774-ae6f-a74787f9df91"
          ],
          "display_name": false
        },
        {
          "uuid": "a658e187-14ef-44c2-ad93-e8c1072f1418",
          "name": "PROPYL VINYL KETONE",
          "stdName": "PROPYL VINYL KETONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "a698713e-76be-43e8-b6cb-369b878c032c",
            "913b2e51-cf69-4664-a6f3-e688aad793aa"
          ],
          "display_name": false
        },
        {
          "uuid": "a2db79fd-d16a-4d62-a2af-cc262864b28a",
          "name": "VINYL PROPYL KETONE",
          "stdName": "VINYL PROPYL KETONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "a698713e-76be-43e8-b6cb-369b878c032c",
            "913b2e51-cf69-4664-a6f3-e688aad793aa"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "fa5896e5-77a2-4774-ae6f-a74787f9df91",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "a698713e-76be-43e8-b6cb-369b878c032c",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "913b2e51-cf69-4664-a6f3-e688aad793aa",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8b0c4d95-5af5-4d4e-84c4-bf57abb93864",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391322000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "58ec3334-c132-47a1-bca4-2b62b22165b5",
          "citation": "SRS import [QH9D98Z86N]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=QH9D98Z86N",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391322000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5ce2b6ff-b520-dcc3-d689-e8f659477461",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=1629-60-3",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "1264c186-f3ef-4b57-833f-ea4131c86850",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "a6a66386-d949-43aa-b86e-03b864620b18",
          "id": "a6a66386-d949-43aa-b86e-03b864620b18",
          "molfile": "\n  Marvin  01132108392D          \n\n  7  6  0  0  0  0            999 V2000\n    8.9413   -2.6318    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2268   -3.0444    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2268   -3.8694    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5123   -4.2819    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7979   -3.8694    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5123   -5.1069    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7979   -5.5194    0.0000 C   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  4  5  2  0  0  0  0\n  6  4  1  0  0  0  0\n  7  6  2  0  0  0  0\nM  END",
          "smiles": "CCCC(=O)C=C",
          "formula": "C6H10O",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "ffbe3fb6-c4a2-471b-9fcb-f986b80abb5b"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "98.1432",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "f71776a3-2850-487b-8815-3489b58a1503",
      "version": "3",
      "structure": {
        "id": "c3c6b07b-b14f-431b-9999-d6e2d134ab2b",
        "molfile": "\n  Marvin  01132110072D          \n\n  7  6  0  0  0  0            999 V2000\n    6.7979   -5.5194    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5123   -5.1069    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5123   -4.2819    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7979   -3.8694    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2268   -3.8694    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2268   -3.0444    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.9413   -2.6318    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  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  6  7  1  0  0  0  0\nM  END",
        "smiles": "CCCC(=O)C=C",
        "formula": "C6H10O",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "98.1432",
        "optical_activity": "NONE",
        "references": [
          "fa5896e5-77a2-4774-ae6f-a74787f9df91",
          "58ec3334-c132-47a1-bca4-2b62b22165b5"
        ],
        "stereo_centers": 0
      },
      "unii": "QH9D98Z86N"
    }
  ]
}