{
  "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": "abd37e29-d0a8-47e1-ae11-4b31e2c11339",
          "code": "7439-94-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=7439-94-3",
          "code_system": "CAS",
          "references": [
            "7f9ad0fe-5912-aff5-17e2-dfa6f62006eb"
          ]
        },
        {
          "uuid": "3659d413-e1ea-40f0-a8f0-ed1682b00064",
          "code": "1534772",
          "comments": "RxNorm",
          "type": "PRIMARY",
          "url": "https://rxnav.nlm.nih.gov/REST/rxcui/1534772/allProperties.xml?prop=all",
          "code_system": "RXCUI",
          "references": [
            "72972073-04f6-4e96-8d49-a98acaa8b1a2"
          ]
        },
        {
          "uuid": "2c355aad-ede5-4b4e-b6fb-6f93e433ed07",
          "code": "m6946",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m6946?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "72972073-04f6-4e96-8d49-a98acaa8b1a2"
          ]
        },
        {
          "uuid": "13e52b3e-f904-4a5c-910a-83e5fa60694b",
          "code": "SUB177509",
          "type": "PRIMARY",
          "code_system": "EVMPD",
          "references": [
            "72972073-04f6-4e96-8d49-a98acaa8b1a2"
          ]
        },
        {
          "uuid": "5a6ca07a-169b-4721-b61f-e44af4fbf4d5",
          "code": "231-103-0",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.028.275",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "72972073-04f6-4e96-8d49-a98acaa8b1a2"
          ]
        },
        {
          "uuid": "f21c6699-fe94-4ee4-83de-6078f8d4daf8",
          "code": "23929",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/23929",
          "code_system": "PUBCHEM",
          "references": [
            "72972073-04f6-4e96-8d49-a98acaa8b1a2"
          ]
        },
        {
          "uuid": "5b9e6127-5350-42ef-b55e-8ef62e5b7059",
          "code": "DTXSID5047746",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID5047746",
          "code_system": "EPA CompTox",
          "references": [
            "d74893cb-3a80-66f6-cfcc-074b2fdf8d65"
          ]
        },
        {
          "uuid": "64d69d31-82f5-5f0b-238d-a7b901fa052b",
          "code": "1241 (Number of products:27)",
          "comments": "Dietary Supplement Label Database|Element|Lutetium",
          "type": "PRIMARY",
          "url": "https://dsld.od.nih.gov/dsld/rptIngredient.jsp?grpid=1241&item=Lutetium",
          "code_system": "DSLD",
          "references": [
            "308a4c9e-3493-0b4e-ea47-2d4568090f61"
          ]
        },
        {
          "uuid": "a206e6b8-9624-4f4e-9890-d52b0dc1e7b7",
          "code": "5H0DOZ21UJ",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "3aa8ec76-fc3f-f147-6d89-68ef247ac18a",
          "code": "33382",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:33382",
          "code_system": "CHEBI",
          "references": [
            "308a4c9e-3493-0b4e-ea47-2d4568090f61"
          ]
        },
        {
          "uuid": "f0660945-bbf8-8746-d3ea-9cda3eec1efe",
          "code": "100000163286",
          "type": "PRIMARY",
          "code_system": "SMS_ID",
          "references": [
            "706c2b4b-030c-3aa5-2fcf-402286a4aee2"
          ]
        },
        {
          "uuid": "ca41a9bf-c9ed-474c-bb50-1f9b92f58216",
          "code": "5H0DOZ21UJ",
          "type": "PRIMARY",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=5H0DOZ21UJ",
          "code_system": "DAILYMED",
          "references": [
            "4c5876f7-a2fc-80cf-938e-d128f259cab9"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "9270a132-104e-4878-9400-3d5e3e894d90",
          "type": "ACTIVE MOIETY",
          "related_substance": {
            "uuid": "87527311-43ef-482d-a018-43fdf58fea90",
            "refuuid": "ae5f29b6-9a92-46e9-a07e-26c27d752f89",
            "name": "LUTETIUM",
            "unii": "5H0DOZ21UJ",
            "linking_id": "5H0DOZ21UJ",
            "ref_pname": "LUTETIUM",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "5420837a-4030-3c36-4546-107c9a4bb9bf",
          "name": "CASSIOPEUM",
          "stdName": "CASSIOPEUM",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "7f9ad0fe-5912-aff5-17e2-dfa6f62006eb"
          ],
          "display_name": false
        },
        {
          "uuid": "863c5277-f126-475f-bd08-87ae5a1a8466",
          "name": "LU",
          "stdName": "LU",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2b59ebce-e85e-4297-bba7-e49a01be5cbc",
            "f690cbcd-2823-4efb-a4db-41e8ff830905"
          ],
          "display_name": false
        },
        {
          "uuid": "edb8e372-7ea9-3246-6628-b461d3d7e755",
          "name": "LUTECIUM",
          "stdName": "LUTECIUM",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "e70e0159-2f55-db19-1982-b12615a58ecc"
          ],
          "display_name": false
        },
        {
          "uuid": "699196fa-449a-44a3-bdb3-1e0b97b1508d",
          "name": "LUTETIUM",
          "stdName": "LUTETIUM",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2b59ebce-e85e-4297-bba7-e49a01be5cbc",
            "f690cbcd-2823-4efb-a4db-41e8ff830905",
            "6dd7e0c5-fa61-462b-a180-bfc8c94fd171",
            "93c49219-33de-4c96-8b06-c8612b840a72"
          ],
          "display_name": true
        },
        {
          "uuid": "70af3b30-629e-4f43-806d-25d1205c4390",
          "name": "LUTETIUM [MI]",
          "stdName": "LUTETIUM [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2b59ebce-e85e-4297-bba7-e49a01be5cbc",
            "93c49219-33de-4c96-8b06-c8612b840a72"
          ],
          "display_name": false
        },
        {
          "uuid": "911e525f-37e8-4b90-a3b1-e21c0a696bc5",
          "name": "LUTETIUM, ELEMENTAL",
          "stdName": "LUTETIUM, ELEMENTAL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "2b59ebce-e85e-4297-bba7-e49a01be5cbc",
            "f690cbcd-2823-4efb-a4db-41e8ff830905"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "f690cbcd-2823-4efb-a4db-41e8ff830905",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "2b59ebce-e85e-4297-bba7-e49a01be5cbc",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "93c49219-33de-4c96-8b06-c8612b840a72",
          "citation": "MERCK INDEX",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "72972073-04f6-4e96-8d49-a98acaa8b1a2",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391005000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "6ac0b1bb-9c3d-4f9f-ac63-2b15c26da7b4",
          "citation": "SRS import [5H0DOZ21UJ]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=5H0DOZ21UJ",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391005000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "6dd7e0c5-fa61-462b-a180-bfc8c94fd171",
          "citation": "LUTETIUM [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "d74893cb-3a80-66f6-cfcc-074b2fdf8d65",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=7439-94-3",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "e70e0159-2f55-db19-1982-b12615a58ecc",
          "citation": "TKB",
          "doc_type": "TOBACCO KNOWLEDGE BASE",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "7f9ad0fe-5912-aff5-17e2-dfa6f62006eb",
          "citation": "SCIFINDER",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "706c2b4b-030c-3aa5-2fcf-402286a4aee2",
          "citation": "EU-SRS",
          "doc_type": "EMA LIST",
          "public_domain": true
        },
        {
          "uuid": "308a4c9e-3493-0b4e-ea47-2d4568090f61",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "4c5876f7-a2fc-80cf-938e-d128f259cab9",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "e84d1e7f-6f3a-429d-8410-b60b941c63d3",
          "id": "e84d1e7f-6f3a-429d-8410-b60b941c63d3",
          "molfile": "\n  Marvin  01132112012D          \n\n  1  0  0  0  0  0            999 V2000\n    6.6816   -2.7500    0.0000 Lu  0  0  0  0  0  0  0  0  0  0  0  0\nM  END",
          "smiles": "[Lu]",
          "formula": "Lu",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "4e5aa914-42ab-4ce3-bb3f-894b7a52a806"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "174.9667",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "ae5f29b6-9a92-46e9-a07e-26c27d752f89",
      "version": "9",
      "structure": {
        "id": "233b99e9-b558-406c-ad7b-2e39ff0a39b1",
        "molfile": "\n  Marvin  01132101582D          \n\n  1  0  0  0  0  0            999 V2000\n    6.6816   -2.7500    0.0000 Lu  0  0  0  0  0  0  0  0  0  0  0  0\nM  END",
        "smiles": "[Lu]",
        "formula": "Lu",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "174.9667",
        "optical_activity": "NONE",
        "references": [
          "f690cbcd-2823-4efb-a4db-41e8ff830905",
          "6ac0b1bb-9c3d-4f9f-ac63-2b15c26da7b4"
        ],
        "stereo_centers": 0
      },
      "unii": "5H0DOZ21UJ"
    }
  ]
}