{
  "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": "7f20af4e-6362-4e25-8bc9-41c90151b767",
          "code": "4-METHYLPENTANOIC ACID",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=3559",
          "code_system": "JECFA EVALUATION",
          "references": [
            "554cb329-8635-4a34-bfa0-ddb883d26511"
          ]
        },
        {
          "uuid": "2b6f34cc-f52a-489f-8976-f31abc8b992e",
          "code": "646-07-1",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=646-07-1",
          "code_system": "CAS",
          "references": [
            "554cb329-8635-4a34-bfa0-ddb883d26511",
            "164e822a-6384-44e7-a297-3707f83e7db3"
          ]
        },
        {
          "uuid": "e352b1cb-fb10-4d4b-ac51-497468fe8b5a",
          "code": "211-464-0",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.010.423",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "554cb329-8635-4a34-bfa0-ddb883d26511"
          ]
        },
        {
          "uuid": "dff3a73f-d102-4299-af26-bc02d6a5450a",
          "code": "12587",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/12587",
          "code_system": "PUBCHEM",
          "references": [
            "554cb329-8635-4a34-bfa0-ddb883d26511"
          ]
        },
        {
          "uuid": "e703ccd4-e2a5-cf13-5249-70f334b768ec",
          "code": "DTXSID8060951",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID8060951",
          "code_system": "EPA CompTox",
          "references": [
            "cf48e28e-2a71-2838-2fc8-864d97d6c791"
          ]
        },
        {
          "uuid": "a8866a5c-a31f-1b07-1dac-96ca19aed863",
          "code": "DB03993",
          "type": "PRIMARY",
          "url": "https://go.drugbank.com/drugs/DB03993",
          "code_system": "DRUG BANK",
          "references": [
            "7a8fd982-d8f5-c8d6-00c8-3676312e48c3"
          ]
        },
        {
          "uuid": "b85aa36d-b396-40ba-8075-ce28d2c01fe3",
          "code": "4G4U8JA28T",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "0e9de0fb-f063-f38b-3ff4-5d9eb0d14bca",
          "code": "74903",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:74903",
          "code_system": "CHEBI",
          "references": [
            "7a8fd982-d8f5-c8d6-00c8-3676312e48c3"
          ]
        },
        {
          "uuid": "e3561b05-7aac-4c66-c5d6-88cea5361ff7",
          "code": "4-Methylpentanoic acid",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/4-Methylpentanoic_acid",
          "code_system": "WIKIPEDIA",
          "references": [
            "46e074bc-d9bf-ba5a-ee47-7953b2954d28"
          ]
        },
        {
          "uuid": "c1e0f669-3b03-0cff-719d-d06e416bc2b5",
          "code": "4126",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=4126",
          "code_system": "NSC",
          "references": [
            "af912f09-3430-b756-a6a3-9449d516a801"
          ]
        },
        {
          "uuid": "2017976b-1535-1cc3-becc-889db40df3c5",
          "code": "413",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/413/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "26092230-2b42-62b0-3b69-86223fa6cdbb"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "6337d675-b395-43ba-b524-bcaff1a579f7",
          "name": "4-METHYLPENTANOIC ACID",
          "stdName": "4-METHYLPENTANOIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "db76beec-b6ac-4a1e-9118-3f7253251bc3",
            "358f8d0d-2dc6-4c60-a2f3-38289553a00f",
            "bc5f1a00-1795-458b-9e1f-a7120ae073f9",
            "2d1cc1bd-2469-43fa-88ce-00148342af5b",
            "96d20d85-6ab7-453c-a7be-02772f5d4f8d",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "6d50f89b-93b1-4d94-ab7f-96b5ec485c15",
          "name": "4-METHYLPENTANOIC ACID [FCC]",
          "stdName": "4-METHYLPENTANOIC ACID [FCC]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "96d20d85-6ab7-453c-a7be-02772f5d4f8d",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "aa313982-e191-4384-921b-bc27318083b8",
          "name": "4-METHYLPENTANOIC ACID [FHFI]",
          "stdName": "4-METHYLPENTANOIC ACID [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "358f8d0d-2dc6-4c60-a2f3-38289553a00f",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "598eb2de-3b74-44b3-b213-e98377d0f702",
          "name": "4-METHYLVALERIC ACID",
          "stdName": "4-METHYLVALERIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "db76beec-b6ac-4a1e-9118-3f7253251bc3",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "ba1791be-43b6-42f7-8f11-c0d8302c0f2e",
          "name": "FEMA NO. 3463",
          "stdName": "FEMA NO. 3463",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ee5eeac3-886e-4e2c-b7b4-6535141f1153"
          ],
          "display_name": false
        },
        {
          "uuid": "499896e9-e649-4b86-b0f5-c87ac7569f96",
          "name": "ISOBUTYLACETIC ACID",
          "stdName": "ISOBUTYLACETIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "82a10cfd-0dab-47c5-b9bf-2dd1d6c63b7f",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "7850c754-cc65-492d-aa2c-5e56c8e4dab7",
          "name": "ISOCAPROIC ACID",
          "stdName": "ISOCAPROIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "db76beec-b6ac-4a1e-9118-3f7253251bc3",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": true
        },
        {
          "uuid": "0d0326e0-1b0a-4b35-85af-44216314ea32",
          "name": "ISOHEXANOIC ACID",
          "stdName": "ISOHEXANOIC ACID",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "db76beec-b6ac-4a1e-9118-3f7253251bc3",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "34951837-6965-4e65-92c4-eba705dded43",
          "name": "NSC-4126",
          "stdName": "NSC-4126",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "b6c6dd8c-8030-4fcb-94d2-6a82f70e87ee",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "af84318b-038d-4176-bb96-c3583848c606",
          "name": "PENTANOIC ACID, 4-METHYL-",
          "stdName": "PENTANOIC ACID, 4-METHYL-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "82a10cfd-0dab-47c5-b9bf-2dd1d6c63b7f",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        },
        {
          "uuid": "f7af497f-2ad9-4307-b6ec-bc720ac5572b",
          "name": "VALERIC ACID, 4-METHYL-",
          "stdName": "VALERIC ACID, 4-METHYL-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "82a10cfd-0dab-47c5-b9bf-2dd1d6c63b7f",
            "1cf0665e-72e7-4bad-b692-9d22be078419"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "db76beec-b6ac-4a1e-9118-3f7253251bc3",
          "citation": "PATTYS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "1cf0665e-72e7-4bad-b692-9d22be078419",
          "citation": "PATTYS TOXICOLOGY",
          "doc_type": "PATTYS TOXICOLOGY",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "82a10cfd-0dab-47c5-b9bf-2dd1d6c63b7f",
          "citation": "ChemID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ee5eeac3-886e-4e2c-b7b4-6535141f1153",
          "citation": "CHEMID 2010",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "358f8d0d-2dc6-4c60-a2f3-38289553a00f",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "96d20d85-6ab7-453c-a7be-02772f5d4f8d",
          "citation": "FCC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b6c6dd8c-8030-4fcb-94d2-6a82f70e87ee",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "554cb329-8635-4a34-bfa0-ddb883d26511",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390826000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "38f43f52-203b-481f-89e7-71fd2606124f",
          "citation": "SRS import [4G4U8JA28T]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=4G4U8JA28T",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390826000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2d1cc1bd-2469-43fa-88ce-00148342af5b",
          "citation": "4-METHYLPENTANOIC ACID [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "bc5f1a00-1795-458b-9e1f-a7120ae073f9",
          "citation": "4-METHYLPENTANOIC ACID [FCC]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "cf48e28e-2a71-2838-2fc8-864d97d6c791",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=646-07-1",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "46e074bc-d9bf-ba5a-ee47-7953b2954d28",
          "citation": "WIKI",
          "doc_type": "WIKI",
          "public_domain": true
        },
        {
          "uuid": "7a8fd982-d8f5-c8d6-00c8-3676312e48c3",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "164e822a-6384-44e7-a297-3707f83e7db3",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "af912f09-3430-b756-a6a3-9449d516a801",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "26092230-2b42-62b0-3b69-86223fa6cdbb",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "aa688bbb-afeb-4017-bb4a-9aad95acbc6b",
          "id": "aa688bbb-afeb-4017-bb4a-9aad95acbc6b",
          "molfile": "\n  Marvin  01132108512D          \n\n  8  7  0  0  0  0            999 V2000\n   -3.2860   -3.4404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.5720   -3.0271    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.5761   -2.2004    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.8580   -3.4404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.1441   -3.0271    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.4301   -3.4404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.2839   -3.0271    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.4342   -4.2671    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  1  0  0  0  0\n  2  4  1  0  0  0  0\n  4  5  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)CCC(=O)O",
          "formula": "C6H12O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "b739b8d7-556c-4781-a28f-3e17b0572ed4"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "116.1585",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "9f7650fc-2ab3-45d2-839f-f8c3181b0854",
      "version": "9",
      "structure": {
        "id": "fd6c8804-84c3-47f4-aca9-81abbeff57cb",
        "molfile": "\n  Marvin  01132113072D          \n\n  8  7  0  0  0  0            999 V2000\n   -3.2860   -3.4404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.5720   -3.0271    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.8580   -3.4404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.1441   -3.0271    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.4301   -3.4404    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.2839   -3.0271    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.4342   -4.2671    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.5761   -2.2004    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  4  5  1  0  0  0  0\n  2  3  1  0  0  0  0\n  5  6  1  0  0  0  0\n  1  2  1  0  0  0  0\n  5  7  2  0  0  0  0\n  3  4  1  0  0  0  0\n  2  8  1  0  0  0  0\nM  END",
        "smiles": "CC(C)CCC(=O)O",
        "formula": "C6H12O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "116.1585",
        "optical_activity": "NONE",
        "references": [
          "82a10cfd-0dab-47c5-b9bf-2dd1d6c63b7f",
          "38f43f52-203b-481f-89e7-71fd2606124f"
        ],
        "stereo_centers": 0
      },
      "unii": "4G4U8JA28T"
    }
  ]
}