{
  "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": "c6f23252-9f82-4556-bc62-ca14f55a4b2d",
          "code": "78887-71-5",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=78887-71-5",
          "code_system": "CAS",
          "references": [
            "03cceca2-e2f0-4da1-b906-37ebc4008a00",
            "e986aa08-eeec-45cf-b685-91a3442567cb"
          ]
        },
        {
          "uuid": "daf9a11b-bf03-4b6e-9977-3c06c1226707",
          "code": "450349",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/450349",
          "code_system": "PUBCHEM",
          "references": [
            "03cceca2-e2f0-4da1-b906-37ebc4008a00"
          ]
        },
        {
          "uuid": "8662e448-cf88-80e0-6fc8-bf78a63cad53",
          "code": "662018",
          "comments": "ORPHAN DRUG|Designated|Diagnostic for the management of hepatoblastoma",
          "type": "PRIMARY",
          "url": "https://www.accessdata.fda.gov/scripts/opdlisting/oopd/detailedIndex.cfm?cfgridkey=662018",
          "code_system": "FDA ORPHAN DRUG"
        },
        {
          "uuid": "5c75d5ba-b405-9915-60aa-77c4c0c9b5b6",
          "code": "DB15111",
          "type": "PRIMARY",
          "url": "http://www.drugbank.ca/drugs/DB15111",
          "code_system": "DRUG BANK"
        },
        {
          "uuid": "75c80fcd-db66-4adb-9613-1410fc86f47d",
          "code": "2A9OM7IPNW",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "9758ce52-4412-27e0-e0f6-c734e3ce3ade",
          "code": "2550706",
          "type": "PRIMARY",
          "url": "https://rxnav.nlm.nih.gov/REST/rxcui/2550706/allProperties.xml?prop=all",
          "code_system": "RXCUI",
          "references": [
            "2f5b9438-bbf5-945f-7e2f-5c155312447a"
          ]
        },
        {
          "uuid": "c424c2f2-e429-37bb-8b6f-4b6560fbdf60",
          "code": "2A9OM7IPNW",
          "type": "PRIMARY",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=2A9OM7IPNW",
          "code_system": "DAILYMED",
          "references": [
            "6fa2e5e6-5c4e-c70b-f932-a5aa25cd9272"
          ]
        },
        {
          "uuid": "1b70774c-9b39-5a1b-df50-794e1d68038c",
          "code": "C38712",
          "type": "PRIMARY",
          "url": "https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C38712",
          "code_system": "NCI_THESAURUS",
          "references": [
            "43498b1a-0c91-db17-757a-bb8251c10a00"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "029b619f-c19f-4196-80c2-40a28bc032dd",
          "type": "ACTIVE MOIETY",
          "related_substance": {
            "uuid": "40c0b869-d760-4d20-a3d9-70f6e6559ecf",
            "refuuid": "59b97acd-763f-4895-9089-df9918824281",
            "name": "ACETIC ACID C-11",
            "unii": "2A9OM7IPNW",
            "linking_id": "2A9OM7IPNW",
            "ref_pname": "ACETIC ACID C-11",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "0784602b-6454-f109-4887-84a7fcb0cadf",
          "name": "(11C)ACETIC ACID",
          "stdName": "(11C)ACETIC ACID",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "f14a338b-5ac0-4050-873f-3cd37c7a1e30"
          ],
          "display_name": false
        },
        {
          "uuid": "283b0429-3f24-4794-bcdd-b43e8ec9b6dd",
          "name": "11C-ACETATE",
          "stdName": "11C-ACETATE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "33dcef24-d42b-446f-92a7-8baa1c5b679e",
            "f14a338b-5ac0-4050-873f-3cd37c7a1e30"
          ],
          "display_name": false
        },
        {
          "uuid": "316a31c3-2fd0-4a00-91c2-c512026ef4a6",
          "name": "ACETIC ACID C-11",
          "stdName": "ACETIC ACID C-11",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "33dcef24-d42b-446f-92a7-8baa1c5b679e",
            "46f50c72-db8d-45ae-a003-72c20a74a993"
          ],
          "display_name": true
        },
        {
          "uuid": "a6f0153a-f7d7-4b90-b878-a958b9a9cb6c",
          "name": "ACETIC-1-11C ACID",
          "stdName": "ACETIC-1-11C ACID",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "33dcef24-d42b-446f-92a7-8baa1c5b679e",
            "f14a338b-5ac0-4050-873f-3cd37c7a1e30"
          ],
          "display_name": false
        },
        {
          "uuid": "fc4b2d86-6547-d636-25ed-02417c821bc6",
          "name": "C-11 ACETATE",
          "stdName": "C-11 ACETATE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e986aa08-eeec-45cf-b685-91a3442567cb"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "f14a338b-5ac0-4050-873f-3cd37c7a1e30",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "33dcef24-d42b-446f-92a7-8baa1c5b679e",
          "citation": "STN (SCIFINDER)",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "46f50c72-db8d-45ae-a003-72c20a74a993",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "03cceca2-e2f0-4da1-b906-37ebc4008a00",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391971000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "cb0945f0-30f2-405b-a8f5-3b14b5c6d04b",
          "citation": "SRS import [2A9OM7IPNW]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=2A9OM7IPNW",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391971000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "e986aa08-eeec-45cf-b685-91a3442567cb",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "43498b1a-0c91-db17-757a-bb8251c10a00",
          "citation": "NCIT",
          "doc_type": "NCI THESAURUS",
          "public_domain": true
        },
        {
          "uuid": "2f5b9438-bbf5-945f-7e2f-5c155312447a",
          "citation": "RXNORM",
          "doc_type": "NLM",
          "public_domain": true
        },
        {
          "uuid": "6fa2e5e6-5c4e-c70b-f932-a5aa25cd9272",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "1663022c-b818-40d1-98c6-65bed8109cbb",
          "id": "1663022c-b818-40d1-98c6-65bed8109cbb",
          "molfile": "\n  Marvin  01132101212D          \n\n  4  3  0  0  0  0            999 V2000\n   -2.1828   -0.6296    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.4683   -0.2171    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.7538   -0.6296    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.4683    0.6078    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  2  0  0  0  0\nM  ISO  1   2  11\nM  END",
          "smiles": "C[11C](=O)O",
          "formula": "C2H4O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "5d669753-a630-4f2b-821d-96ea8ae6ce4e"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "59.0527",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "59b97acd-763f-4895-9089-df9918824281",
      "version": "9",
      "structure": {
        "id": "8c060f86-ea19-4bfe-8640-5832a708e6de",
        "molfile": "\n  Marvin  01132107162D          \n\n  4  3  0  0  0  0            999 V2000\n   -2.1828   -0.6296    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.4683   -0.2171    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.7538   -0.6296    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.4683    0.6078    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  2  0  0  0  0\nM  ISO  1   2  11\nM  END",
        "smiles": "C[11C](=O)O",
        "formula": "C2H4O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "59.0527",
        "optical_activity": "NONE",
        "references": [
          "cb0945f0-30f2-405b-a8f5-3b14b5c6d04b",
          "f14a338b-5ac0-4050-873f-3cd37c7a1e30"
        ],
        "stereo_centers": 0
      },
      "unii": "2A9OM7IPNW"
    }
  ]
}