{
  "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": "2026-09-09",
    "results": {
      "skip": 0,
      "limit": 1,
      "total": 1
    }
  },
  "results": [
    {
      "codes": [
        {
          "uuid": "ddab9055-cff4-43c3-bc23-81b414f92491",
          "code": "81949-84-0",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=81949-84-0",
          "code_system": "CAS",
          "references": [
            "4f968fe3-a512-497b-b942-72fae48ae45c",
            "efc2e0be-9a33-4718-a693-8863f03599dd"
          ]
        },
        {
          "uuid": "739cd1e3-05b6-48c9-9ec5-cd7c09fbe126",
          "code": "5362689",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/5362689",
          "code_system": "PUBCHEM",
          "references": [
            "4f968fe3-a512-497b-b942-72fae48ae45c"
          ]
        },
        {
          "uuid": "c627777a-f2cb-4188-895c-5c2ac4933f0f",
          "code": "CJ1KAZ111S",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "be3f84e2-4ab2-4b79-8873-9e3e635e938e",
          "name": "2,5-FURANDIONE, DIHYDRO-3-(2-OCTENYL)-, (E)-",
          "stdName": "2,5-FURANDIONE, DIHYDRO-3-(2-OCTENYL)-, (E)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b9c73b19-ad3d-4da7-a0ff-e158d713b528",
            "a686a986-28e5-48af-b83b-c356007f504d"
          ],
          "display_name": false
        },
        {
          "uuid": "29260187-b12c-47ad-9190-3a1787a82c9d",
          "name": "2-OCTENYLSUCCINIC ANHYDRIDE, (2E)-",
          "stdName": "2-OCTENYLSUCCINIC ANHYDRIDE, (2E)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "604b87f9-ed9f-41a1-a369-918910edd88b",
            "b9c73b19-ad3d-4da7-a0ff-e158d713b528"
          ],
          "display_name": true
        },
        {
          "uuid": "01472262-c072-4187-8df8-6b8bff2e610a",
          "name": "TRANS-2-OCTENYLSUCCINIC ANHYDRIDE",
          "stdName": "TRANS-2-OCTENYLSUCCINIC ANHYDRIDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b9c73b19-ad3d-4da7-a0ff-e158d713b528",
            "a686a986-28e5-48af-b83b-c356007f504d"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "a686a986-28e5-48af-b83b-c356007f504d",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "b9c73b19-ad3d-4da7-a0ff-e158d713b528",
          "citation": "STN (SCIFINDER)",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "604b87f9-ed9f-41a1-a369-918910edd88b",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4f968fe3-a512-497b-b942-72fae48ae45c",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493392623000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "73b0df2e-4b3e-4fdb-803d-6e2c5e214875",
          "citation": "SRS import [CJ1KAZ111S]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=CJ1KAZ111S",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493392623000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "efc2e0be-9a33-4718-a693-8863f03599dd",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "b67d01df-974b-4f5d-ad85-29f374835b19",
          "id": "b67d01df-974b-4f5d-ad85-29f374835b19",
          "molfile": "\n  Marvin  01132109272D          \n\n 15 15  0  0  0  0            999 V2000\n   -3.9210   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -3.2065   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.4920   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.7776   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.0631   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.3486   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.3658   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.0803   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.7948   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  3  0  0\n    2.5485   -0.8156    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1005   -0.2025    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.9210   -0.2887    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6880    0.5120    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    1.8810    0.3405    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2679    0.8925    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  7  6  2  0  0  0  0\n  8  7  1  0  0  0  0\n  9  8  1  0  0  0  0\n  9 10  1  0  0  0  0\n 14  9  1  0  0  0  0\n 10 11  1  0  0  0  0\n 11 12  2  0  0  0  0\n 13 11  1  0  0  0  0\n 13 14  1  0  0  0  0\n 14 15  2  0  0  0  0\nM  END",
          "smiles": "CCCCC/C=C/CC1CC(=O)OC1=O",
          "formula": "C12H18O3",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "RACEMIC",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "2d7a5d91-8899-4a25-98bd-f9f0e34f1d06"
          },
          "defined_stereo": 0,
          "ez_centers": 1,
          "molecular_weight": "210.27",
          "optical_activity": "( + / - )",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "c825d4dc-0a4b-4b77-9ae0-c6ac75b01da2",
      "version": "2",
      "structure": {
        "id": "8f614086-95f8-4efb-871d-a2f513c4e0c4",
        "molfile": "\n  Marvin  01132107262D          \n\n 15 15  0  0  0  0            999 V2000\n    2.6880    0.5120    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    1.8810    0.3405    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.7948   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.5485   -0.8156    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.1005   -0.2025    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2679    0.8925    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    3.9210   -0.2887    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    1.0803   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.3658   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.3486   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.0631   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.7776   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.4920   -0.4800    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -3.2065   -0.8925    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -3.9210   -0.4800    0.0000 C   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  1  5  1  0  0  0  0\n  2  6  2  0  0  0  0\n  5  7  2  0  0  0  0\n  8  9  1  0  0  0  0\n  9 10  2  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\n 13 14  1  0  0  0  0\n 14 15  1  0  0  0  0\n  3  8  1  0  0  0  0\nM  END",
        "smiles": "CCCCC/C=C/CC1CC(=O)OC1=O",
        "formula": "C12H18O3",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "RACEMIC",
        "defined_stereo": 0,
        "ez_centers": 1,
        "molecular_weight": "210.27",
        "optical_activity": "( + / - )",
        "references": [
          "73b0df2e-4b3e-4fdb-803d-6e2c5e214875",
          "a686a986-28e5-48af-b83b-c356007f504d"
        ],
        "stereo_centers": 1
      },
      "unii": "CJ1KAZ111S"
    }
  ]
}