{
  "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": "39cd45d5-f8aa-4e82-9ada-ae1391db09c3",
          "code": "3-METHYL-2-BUTENAL",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=4556",
          "code_system": "JECFA EVALUATION",
          "references": [
            "574de13c-2c77-483f-a13d-cc3b41599610"
          ]
        },
        {
          "uuid": "ef93fa1c-293e-4ec2-b916-760c8bd6da9c",
          "code": "107-86-8",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=107-86-8",
          "code_system": "CAS",
          "references": [
            "574de13c-2c77-483f-a13d-cc3b41599610",
            "df273cfd-5dda-4253-b8b1-31e4a03b70c6"
          ]
        },
        {
          "uuid": "0b3a19f1-f7db-4f40-aaed-eaf2be2c9665",
          "code": "C544930",
          "type": "PRIMARY",
          "url": "http://www.ncbi.nlm.nih.gov/mesh/67544930",
          "code_system": "MESH",
          "references": [
            "574de13c-2c77-483f-a13d-cc3b41599610"
          ]
        },
        {
          "uuid": "464cb85f-603c-48ca-b2ec-ba437779055b",
          "code": "m9857",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m9857?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "574de13c-2c77-483f-a13d-cc3b41599610"
          ]
        },
        {
          "uuid": "f390b781-52d9-4726-932d-b1ee62c049e6",
          "code": "61020",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/61020",
          "code_system": "PUBCHEM",
          "references": [
            "574de13c-2c77-483f-a13d-cc3b41599610"
          ]
        },
        {
          "uuid": "251a37f4-6ba7-4807-aafc-0d8bc8095691",
          "code": "203-527-6",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.003.207",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "574de13c-2c77-483f-a13d-cc3b41599610"
          ]
        },
        {
          "uuid": "c069745e-4e6b-3f45-7dcd-8044249a0886",
          "code": "DTXSID8029606",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID8029606",
          "code_system": "EPA CompTox",
          "references": [
            "a4c38e25-f629-974d-fb8c-aaa1adc9c180"
          ]
        },
        {
          "uuid": "235a9dbb-1160-47bb-80d3-3805d93514fb",
          "code": "2JZ2B60W76",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "d60c0ffd-c5cb-9844-ac32-a3eec1e9b3d6",
          "code": "15825",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:15825",
          "code_system": "CHEBI",
          "references": [
            "e4c99f8c-22e4-3214-016a-210ad7b65e35"
          ]
        },
        {
          "uuid": "b4fded19-de26-6d35-82e2-f5d4c76d9804",
          "code": "149164",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=149164",
          "code_system": "NSC",
          "references": [
            "804818fc-3782-7386-dfb9-e8a9776dba3d"
          ]
        },
        {
          "uuid": "f6d94075-3a7f-567b-9ecf-72abfcfe3162",
          "code": "1211",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/1211/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "590069f4-db4a-9521-d149-08859c348b4b"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "2ab4c574-42b0-49a5-aac4-8b9b3a72dec2",
          "name": ".BETA.,.BETA.-DIMETHYLACROLEIN",
          "stdName": ".BETA.,.BETA.-DIMETHYLACROLEIN",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "80f75553-049d-4546-95f0-a55469933c99",
          "name": ".BETA.,.BETA.-DIMETHYLACRYLIC ALDEHYDE",
          "stdName": ".BETA.,.BETA.-DIMETHYLACRYLIC ALDEHYDE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "11f2b557-575e-4b77-98cc-1f9c9ba1ea6e",
          "name": ".BETA.-METHYLCROTONALDEHYDE",
          "stdName": ".BETA.-METHYLCROTONALDEHYDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "13b0ef41-e5d4-4422-a728-d11a5023fb73",
          "name": "2-BUTENAL, 3-METHYL-",
          "stdName": "2-BUTENAL, 3-METHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "c6df980f-5864-4cfd-9aeb-8417275fe6bd",
          "name": "2-METHYL-2-BUTEN-4-AL",
          "stdName": "2-METHYL-2-BUTEN-4-AL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "d76a4ddd-776a-4c6c-9ef9-2d6e1e8797cf",
          "name": "3,3-DIMETHYLACROLEIN",
          "stdName": "3,3-DIMETHYLACROLEIN",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "91b32675-cca6-4dd8-aa5e-74cd261e7cfb",
          "name": "3-METHYL-2-BUTEN-1-AL",
          "stdName": "3-METHYL-2-BUTEN-1-AL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "d4475d08-df84-4660-9eae-9f2b599e950a",
          "name": "3-METHYL-2-BUTENAL",
          "stdName": "3-METHYL-2-BUTENAL",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "07538bdf-88ff-41f0-95e6-5eb8db115241",
            "19e60c27-442a-4511-bf77-dfc0e882ff0b",
            "7d1a9103-68d1-45e4-8d0d-162e99a81487",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "a1780d3c-df99-4fc8-a468-2060b69673a4",
          "name": "3-METHYL-2-BUTENAL [FHFI]",
          "stdName": "3-METHYL-2-BUTENAL [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "19e60c27-442a-4511-bf77-dfc0e882ff0b",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "d842393e-6634-44ec-ad3f-caf1aa35cefe",
          "name": "3-METHYL-2-BUTENALDEHYDE",
          "stdName": "3-METHYL-2-BUTENALDEHYDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "fcc9e493-ba71-4169-847f-0ef5785e9243",
          "name": "3-METHYLCROTONALDEHYDE",
          "stdName": "3-METHYLCROTONALDEHYDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "8bb5651a-7070-4b3a-b6cb-708ea73a3534",
          "name": "CROTONALDEHYDE, 3-METHYL-",
          "stdName": "CROTONALDEHYDE, 3-METHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "45f462fb-5a9a-4226-8f10-f02be2779b5a",
          "name": "FEMA NO. 3646",
          "stdName": "FEMA NO. 3646",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "07538bdf-88ff-41f0-95e6-5eb8db115241",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "2d8e7f73-9072-4dd1-a88b-f68c908cc36b",
          "name": "NSC-149164",
          "stdName": "NSC-149164",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "73fdbfc5-f0e5-47f3-851b-6e62bf6af3ae",
          "name": "PRENAL",
          "stdName": "PRENAL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        },
        {
          "uuid": "84789c57-1860-4236-8087-2108d2bcf51a",
          "name": "SENECIALDEHYDE",
          "stdName": "SENECIALDEHYDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "d34632cb-b288-4828-8df2-6fe91bb9a1b8",
            "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
            "d6c1b7a8-eecd-4fc2-a7f1-3bf28d0eaf05",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": true
        },
        {
          "uuid": "99b05dc2-548f-4bf4-9cd1-ab855ebfb234",
          "name": "SENECIALDEHYDE [MI]",
          "stdName": "SENECIALDEHYDE [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "d34632cb-b288-4828-8df2-6fe91bb9a1b8",
            "c2587cc6-1fbb-4326-8820-781d36c6bcf3"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "b6bc52d5-24ac-4d8b-bea6-321f4f939033",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "c2587cc6-1fbb-4326-8820-781d36c6bcf3",
          "citation": "STN (SCIFINDER)",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "07538bdf-88ff-41f0-95e6-5eb8db115241",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "d34632cb-b288-4828-8df2-6fe91bb9a1b8",
          "citation": "MERCK INDEX",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "19e60c27-442a-4511-bf77-dfc0e882ff0b",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "574de13c-2c77-483f-a13d-cc3b41599610",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391084000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3703139d-bfed-49eb-9eaa-4f5079889010",
          "citation": "SRS import [2JZ2B60W76]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=2JZ2B60W76",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391084000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "d6c1b7a8-eecd-4fc2-a7f1-3bf28d0eaf05",
          "citation": "SENECIALDEHYDE [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "7d1a9103-68d1-45e4-8d0d-162e99a81487",
          "citation": "3-METHYL-2-BUTENAL [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "a4c38e25-f629-974d-fb8c-aaa1adc9c180",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=107-86-8",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "e4c99f8c-22e4-3214-016a-210ad7b65e35",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "804818fc-3782-7386-dfb9-e8a9776dba3d",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "df273cfd-5dda-4253-b8b1-31e4a03b70c6",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "590069f4-db4a-9521-d149-08859c348b4b",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "35dadefd-f777-4222-a75f-d804a58fd69e",
          "id": "35dadefd-f777-4222-a75f-d804a58fd69e",
          "molfile": "\n  Marvin  01132102522D          \n\n  6  5  0  0  0  0            999 V2000\n    2.2054   -2.0295    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.8564   -2.5401    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7376   -3.3473    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.6222   -2.2333    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.2633   -2.7300    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.0389   -2.4372    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  2  3  1  0  0  0  0\n  4  2  2  0  0  0  0\n  4  5  1  0  0  0  0\n  5  6  2  0  0  0  0\nM  END",
          "smiles": "CC(=CC=O)C",
          "formula": "C5H8O",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "5576ba0b-b848-464e-adc7-bc8d32d94e2d"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "84.1166",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "fa43fe98-9b7a-4149-a6ab-d911dfb84da0",
      "version": "6",
      "structure": {
        "id": "842adff6-dc99-4a4b-a430-99cad1e6bc78",
        "molfile": "\n  Marvin  01132106512D          \n\n  6  5  0  0  0  0            999 V2000\n    5.0389   -2.4372    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.2054   -2.0295    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7376   -3.3473    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.2633   -2.7300    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.8564   -2.5401    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.6222   -2.2333    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  4  1  2  0  0  0  0\n  5  2  1  0  0  0  0\n  5  3  1  0  0  0  0\n  6  4  1  0  0  0  0\n  6  5  2  0  0  0  0\nM  END",
        "smiles": "CC(=CC=O)C",
        "formula": "C5H8O",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "84.1166",
        "optical_activity": "NONE",
        "references": [
          "07538bdf-88ff-41f0-95e6-5eb8db115241",
          "3703139d-bfed-49eb-9eaa-4f5079889010"
        ],
        "stereo_centers": 0
      },
      "unii": "2JZ2B60W76"
    }
  ]
}