{
  "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": "40410fe8-13dc-48b0-aec1-15019f60e0cf",
          "code": "6720-16-7",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=6720-16-7",
          "code_system": "CAS",
          "references": [
            "26f4b98b-88ce-4efe-a237-17acc51c72a4",
            "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
          ]
        },
        {
          "uuid": "7826ba77-1a4c-4c54-b056-e851ad904a8e",
          "code": "229-772-9",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.027.067",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "26f4b98b-88ce-4efe-a237-17acc51c72a4"
          ]
        },
        {
          "uuid": "edcdbed1-1831-4fef-b3cc-a55d087f0dcb",
          "code": "6437629",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/6437629",
          "code_system": "PUBCHEM",
          "references": [
            "26f4b98b-88ce-4efe-a237-17acc51c72a4"
          ]
        },
        {
          "uuid": "434d6aed-cd60-4ea7-97ed-c1aa3c7d07ca",
          "code": "3YF5GJK8BN",
          "type": "PRIMARY",
          "code_system": "FDA UNII",
          "references": [
            "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
          ]
        },
        {
          "uuid": "888e3ac2-c787-e230-9928-189fbc2e9ec8",
          "code": "DTXSID5064461",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID5064461",
          "code_system": "EPA CompTox",
          "references": [
            "3bf2a8f8-1d41-a37f-9c49-6151bba2a5ba"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "1d0fd4d8-a30f-4bef-a514-83ef8f58f9c2",
          "name": "(2E)-2-ethylideneundecanal",
          "stdName": "(2E)-2-ETHYLIDENEUNDECANAL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
          ],
          "display_name": false
        },
        {
          "uuid": "d0c50b28-83e9-463e-9bd1-f7a815b995dc",
          "name": "2-Ethylideneundecanal",
          "stdName": "2-ETHYLIDENEUNDECANAL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
          ],
          "display_name": true
        },
        {
          "uuid": "42c73c2f-effb-4df0-86bf-47e165347ff1",
          "name": "2-Nonylcrotonaldehyde",
          "stdName": "2-NONYLCROTONALDEHYDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
          ],
          "display_name": false
        },
        {
          "uuid": "d5085900-12d8-4ebb-85a2-f5bc1195df63",
          "name": "Crotonaldehyde, 2-nonyl-",
          "stdName": "CROTONALDEHYDE, 2-NONYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
          ],
          "display_name": false
        },
        {
          "uuid": "5803e47b-85af-4dd4-9138-22ca9e167d2d",
          "name": "Undecanal, 2-ethylidene-",
          "stdName": "UNDECANAL, 2-ETHYLIDENE-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "cfd8bc97-c1d2-486d-b337-57aab108c37b"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "cfd8bc97-c1d2-486d-b337-57aab108c37b",
          "citation": "CFSAN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "26f4b98b-88ce-4efe-a237-17acc51c72a4",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493392732000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2cf5fa5e-705e-a32d-0dc8-de76707322e5",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=6720-16-7",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "48cc5c1f-cb7f-4fdb-a284-56bd14a80178",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "3bf2a8f8-1d41-a37f-9c49-6151bba2a5ba",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "5ce7298f-ce06-4af8-85b0-e0c65154c7ba",
          "id": "5ce7298f-ce06-4af8-85b0-e0c65154c7ba",
          "molfile": "\n  Marvin  06222310372D          \n\n 14 13  0  0  0  0            999 V2000\n   10.4793   -3.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.1938   -3.2450    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.7649   -3.2450    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.4793   -4.4825    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.9083   -3.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0504   -3.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.7649   -4.8950    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   12.6228   -3.2450    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.3372   -3.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.0517   -3.2450    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.7662   -3.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.4806   -3.2450    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.1951   -3.6575    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.9096   -3.2450    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  2  0  0  0  0\n  1  4  1  0  0  0  0\n  2  5  1  0  0  0  0\n  3  6  1  0  0  0  0\n  4  7  2  0  0  0  0\n  5  8  1  0  0  0  0\n  8  9  1  0  0  0  0\n  9 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\n 13 14  1  0  0  0  0\nM  END",
          "smiles": "CCCCCCCCC/C(=C/C)/C=O",
          "formula": "C13H24O",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "81b3b31a-ec9c-4ea4-a68b-a99a44f5f67d"
          },
          "defined_stereo": 0,
          "ez_centers": 1,
          "molecular_weight": "196.3295",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "b23145ff-2370-46c2-9ab3-09d3c1846790",
      "version": "7",
      "structure": {
        "id": "dd5efd32-7c49-43d0-9771-730a048af414",
        "molfile": "2-Ethylideneundecanal\n   JSDraw206222310372D\n\n 14 13  0  0  0  0              0 V2000\n   19.8154   -6.9160    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.1664   -6.1360    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   18.4645   -6.1360    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   19.8154   -8.4760    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.5175   -6.9160    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.1135   -6.9160    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   18.4645   -9.2560    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   23.8685   -6.1360    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   25.2195   -6.9160    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   26.5704   -6.1360    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.9216   -6.9160    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   29.2725   -6.1360    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   30.6235   -6.9160    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   31.9745   -6.1360    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  2  0  0  0  0\n  1  4  1  0  0  0  0\n  2  5  1  0  0  0  0\n  3  6  1  0  0  0  0\n  4  7  2  0  0  0  0\n  5  8  1  0  0  0  0\n  8  9  1  0  0  0  0\n  9 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\n 13 14  1  0  0  0  0\nM  END",
        "smiles": "CCCCCCCCC/C(=C/C)/C=O",
        "formula": "C13H24O",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 1,
        "molecular_weight": "196.3295",
        "optical_activity": "NONE",
        "references": [
          "cfd8bc97-c1d2-486d-b337-57aab108c37b",
          "48cc5c1f-cb7f-4fdb-a284-56bd14a80178"
        ],
        "stereo_centers": 0
      },
      "unii": "3YF5GJK8BN"
    }
  ]
}