{
  "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": "e8f3f2d9-97ce-4c85-8be8-ed4bc2202962",
          "code": "1775-43-5",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=1775-43-5",
          "code_system": "CAS",
          "references": [
            "cb26d5ac-2c0b-4bef-b4e8-d78b84afda92",
            "f6e8ff47-46a1-4dfb-bea9-d9d03ef736a9"
          ]
        },
        {
          "uuid": "b23f51df-0b38-466b-aa74-8d100d6185fe",
          "code": "CIS-3-HEXENOIC ACID",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=6113",
          "code_system": "JECFA EVALUATION",
          "references": [
            "cb26d5ac-2c0b-4bef-b4e8-d78b84afda92"
          ]
        },
        {
          "uuid": "f4b56dba-7505-430c-8160-7575ae3d0b17",
          "code": "217-205-8",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.015.642",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "cb26d5ac-2c0b-4bef-b4e8-d78b84afda92"
          ]
        },
        {
          "uuid": "73b42aae-6a8e-4fed-b4b3-d5785d8a469d",
          "code": "5355152",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/5355152",
          "code_system": "PUBCHEM",
          "references": [
            "cb26d5ac-2c0b-4bef-b4e8-d78b84afda92"
          ]
        },
        {
          "uuid": "05ea1bc7-ff67-45f3-a5e3-9ecd9af49a08",
          "code": "DTXSID20883579",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID20883579",
          "code_system": "EPA CompTox",
          "references": [
            "ee01513b-ec5c-ec9d-8fa1-3ecaca1b1c56"
          ]
        },
        {
          "uuid": "d6008880-de32-48d4-bfa8-b8c67139eb5d",
          "code": "86H58C39ZV",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "723d77bb-f245-9803-3da9-49decc88ab9d",
          "code": "49284",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:49284",
          "code_system": "CHEBI",
          "references": [
            "b27b4c2e-632b-b810-f6f1-9e41ac44e80f"
          ]
        },
        {
          "uuid": "b8b5e680-014d-30c1-03c9-34cf0f914cc6",
          "code": "2155",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/2155/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "944d8539-2a05-632c-750c-9eb9a78831ac"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "bd219f43-dccd-4aff-8043-2969c3f5209b",
          "name": "(Z)-3-HEXENOIC ACID",
          "stdName": "(Z)-3-HEXENOIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3796c616-2ada-4d19-ac54-112a46e134e2",
            "669d177b-371e-4a58-aac5-16c82c990767"
          ],
          "display_name": false
        },
        {
          "uuid": "e14fc078-5618-4495-ae28-e747c6153e79",
          "name": "3-HEXENOIC ACID, (3Z)-",
          "stdName": "3-HEXENOIC ACID, (3Z)-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3796c616-2ada-4d19-ac54-112a46e134e2",
            "6c8a3498-6fe3-47f9-9368-ca7635faed5f"
          ],
          "display_name": false
        },
        {
          "uuid": "13eebfaf-7f7d-47e5-8089-fcd79479a014",
          "name": "3-HEXENOIC ACID, (Z)-",
          "stdName": "3-HEXENOIC ACID, (Z)-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3796c616-2ada-4d19-ac54-112a46e134e2",
            "669d177b-371e-4a58-aac5-16c82c990767"
          ],
          "display_name": true
        },
        {
          "uuid": "0c2a5676-26c8-4f08-aac6-9db4c8e45f7a",
          "name": "3-HEXENOIC ACID, CIS-",
          "stdName": "3-HEXENOIC ACID, CIS-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3796c616-2ada-4d19-ac54-112a46e134e2",
            "49eb7c68-d437-44c5-9c79-55554803379a"
          ],
          "display_name": false
        },
        {
          "uuid": "eed22a68-a6f3-4bce-9a28-f107ca031f85",
          "name": "CIS-3-HEXENOIC ACID",
          "stdName": "CIS-3-HEXENOIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3796c616-2ada-4d19-ac54-112a46e134e2",
            "669d177b-371e-4a58-aac5-16c82c990767"
          ],
          "display_name": false
        },
        {
          "uuid": "13007a2f-1944-4d22-9c42-5bcdf380b1f6",
          "name": "FEMA NO. 4493",
          "stdName": "FEMA NO. 4493",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3796c616-2ada-4d19-ac54-112a46e134e2",
            "ae5094fb-3167-4c95-8ca6-7ba24827502c"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "3796c616-2ada-4d19-ac54-112a46e134e2",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "669d177b-371e-4a58-aac5-16c82c990767",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ae5094fb-3167-4c95-8ca6-7ba24827502c",
          "citation": "1775-43-5",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "49eb7c68-d437-44c5-9c79-55554803379a",
          "citation": "CFSAN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "cb26d5ac-2c0b-4bef-b4e8-d78b84afda92",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391306000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "77dc179e-49fc-4ac6-beab-c729482d5dc0",
          "citation": "SRS import [86H58C39ZV]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=86H58C39ZV",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391306000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "6c8a3498-6fe3-47f9-9368-ca7635faed5f",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "f6e8ff47-46a1-4dfb-bea9-d9d03ef736a9",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "b27b4c2e-632b-b810-f6f1-9e41ac44e80f",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "ee01513b-ec5c-ec9d-8fa1-3ecaca1b1c56",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        },
        {
          "uuid": "944d8539-2a05-632c-750c-9eb9a78831ac",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "cfd1a592-c4c8-47e0-9421-78118e0da08e",
          "id": "cfd1a592-c4c8-47e0-9421-78118e0da08e",
          "molfile": "\n  Marvin  01132110452D          \n\n  8  7  0  0  0  0            999 V2000\n   10.3712   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6567   -5.1572    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6567   -5.9822    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.9423   -6.3948    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.2278   -5.9822    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5133   -6.3948    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5133   -7.2197    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7988   -5.9822    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  2  0  0  0  0\n  5  4  1  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  6  8  2  0  0  0  0\nM  END",
          "smiles": "CC/C=C\\CC(=O)O",
          "formula": "C6H10O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "2a0e6636-ef93-431c-9eeb-ae84d910bea7"
          },
          "defined_stereo": 0,
          "ez_centers": 1,
          "molecular_weight": "114.1426",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "53bb777f-f785-4417-911f-1dda827fcc80",
      "version": "7",
      "structure": {
        "id": "f3ebb632-c9db-4367-9070-668408f30cec",
        "molfile": "\n  Marvin  01132112392D          \n\n  8  7  0  0  0  0            999 V2000\n    8.2278   -5.9822    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.9423   -6.3948    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6567   -5.9822    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6567   -5.1572    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.3712   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5133   -6.3948    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.5133   -7.2197    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.7988   -5.9822    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  2  0  0  0  0\n  3  4  1  0  0  0  0\n  4  5  1  0  0  0  0\n  1  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  6  8  2  0  0  0  0\nM  END",
        "smiles": "CC/C=C\\CC(=O)O",
        "formula": "C6H10O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 1,
        "molecular_weight": "114.1426",
        "optical_activity": "NONE",
        "references": [
          "669d177b-371e-4a58-aac5-16c82c990767",
          "77dc179e-49fc-4ac6-beab-c729482d5dc0"
        ],
        "stereo_centers": 0
      },
      "unii": "86H58C39ZV"
    }
  ]
}