{
  "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": "21c5fbfb-808f-4c0d-9aaf-834c95ffb908",
          "code": "4810-50-8",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=4810-50-8",
          "code_system": "CAS",
          "references": [
            "bb4cc5de-f9a3-40e2-9cfc-66d36247712f",
            "41efbe1e-d73a-4643-a02b-a060426c0d9b"
          ]
        },
        {
          "uuid": "55b65d57-aca1-46e0-a941-1b064aa2dccd",
          "code": "225-373-9",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.023.067",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "bb4cc5de-f9a3-40e2-9cfc-66d36247712f"
          ]
        },
        {
          "uuid": "bea82d2a-32da-d908-fe1c-064c0a44b16c",
          "code": "23684897",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/23684897",
          "code_system": "PUBCHEM",
          "references": [
            "47b2ec1e-a6d4-944b-e7fd-39b182cf4009"
          ]
        },
        {
          "uuid": "71477480-4762-4df4-a04d-5962f50e31e8",
          "code": "H004M3556Q",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "e3368ff4-3982-84a3-7d9c-319f3cbae9d7",
          "code": "DTXSID40197423",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID40197423",
          "code_system": "EPA CompTox",
          "references": [
            "b22789ca-3386-d6a0-c7de-6ae173042058"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "8a9c4ac6-0e8f-4ad4-8507-d9a502fd8512",
          "type": "PARENT->SALT/SOLVATE",
          "related_substance": {
            "uuid": "a93d22b1-d629-490a-bfa9-8f1c6e8f7b9c",
            "refuuid": "b4015ea9-cdb5-43db-87a3-91407212b35b",
            "name": "PIDOLIC ACID",
            "unii": "SZB83O1W42",
            "linking_id": "SZB83O1W42",
            "ref_pname": "PIDOLIC ACID",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "18dc0336-e552-4144-afc3-2781b051943f",
          "name": "(S)-PYRROLIDONE-5-CARBOXYLIC ACID POTASSIUM SALT",
          "stdName": "(S)-PYRROLIDONE-5-CARBOXYLIC ACID POTASSIUM SALT",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095"
          ],
          "display_name": false
        },
        {
          "uuid": "89193890-bc1c-44a0-a23e-d813519364ad",
          "name": "KALIDONE",
          "stdName": "KALIDONE",
          "type": "bn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095",
            "3cca3adb-53d8-4876-a41b-9c17677539b3"
          ],
          "display_name": false
        },
        {
          "uuid": "02f4c737-6c80-411a-818a-3920ae34dce0",
          "name": "L-PROLINE, 5-OXO-, MONOPOTASSIUM SALT",
          "stdName": "L-PROLINE, 5-OXO-, MONOPOTASSIUM SALT",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095"
          ],
          "display_name": false
        },
        {
          "uuid": "8786c87a-e66a-4af1-bcb2-419d34f66e02",
          "name": "L-PROLINE, 5-OXO-, POTASSIUM SALT (1:1)",
          "stdName": "L-PROLINE, 5-OXO-, POTASSIUM SALT (1:1)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095"
          ],
          "display_name": false
        },
        {
          "uuid": "cf17df1a-d993-4af1-990e-d9ccc0935982",
          "name": "POTASSIUM (S)-2-PYRROLIDONE-5-CARBOXYLATE",
          "stdName": "POTASSIUM (S)-2-PYRROLIDONE-5-CARBOXYLATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095"
          ],
          "display_name": false
        },
        {
          "uuid": "1afcb900-136e-49bf-a47c-54cd477afa77",
          "name": "POTASSIUM 5-OXO-L-PROLINATE",
          "stdName": "POTASSIUM 5-OXO-L-PROLINATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095",
            "fb931150-c58c-4ab5-8389-fa3d399a6b41"
          ],
          "display_name": false
        },
        {
          "uuid": "6d835474-bec0-42b1-b26c-3b1043865c4b",
          "name": "POTASSIUM L-PYROGLUTAMATE",
          "stdName": "POTASSIUM L-PYROGLUTAMATE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095"
          ],
          "display_name": false
        },
        {
          "uuid": "3b485603-7533-4742-925d-c75fe658ba3c",
          "name": "POTASSIUM PCA",
          "stdName": "POTASSIUM PCA",
          "type": "of",
          "languages": [
            "en"
          ],
          "preferred": true,
          "references": [
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095",
            "3cca3adb-53d8-4876-a41b-9c17677539b3",
            "7e76a103-d680-46a0-8ae1-23ae63da8f2e"
          ],
          "display_name": false,
          "domains": [
            "cosmetic"
          ],
          "name_orgs": [
            {
              "uuid": "9f9e30be-7f07-4786-ba62-c1454f99ab40",
              "name_org": "INCI"
            }
          ]
        },
        {
          "uuid": "765b265c-6081-40c4-8d88-6afa40443360",
          "name": "POTASSIUM PIDOLATE",
          "stdName": "POTASSIUM PIDOLATE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095",
            "2623d523-b178-433c-a5e7-385d77258592"
          ],
          "display_name": true
        },
        {
          "uuid": "d3536d8e-458d-4a06-91c8-8aeb43387310",
          "name": "PROLINE, 5-OXO-, POTASSIUM SALT, L-",
          "stdName": "PROLINE, 5-OXO-, POTASSIUM SALT, L-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
            "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095"
          ],
          "display_name": false
        },
        {
          "uuid": "96dc23e1-37f2-b02d-60df-e4cc2ccfd675",
          "name": "Potassium pidolate [WHO-DD]",
          "stdName": "POTASSIUM PIDOLATE [WHO-DD]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "63aec559-e57b-fe22-7662-69f59edb5451"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "3cca3adb-53d8-4876-a41b-9c17677539b3",
          "citation": "PCPC-DB",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "49dee4e6-7fdb-4cfc-bd31-d0ec7bc5e095",
          "citation": "PERSONAL CARE PRODUCTS COUNCIL",
          "doc_type": "PERSONAL CARE PRODUCTS COUNCIL",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "fb931150-c58c-4ab5-8389-fa3d399a6b41",
          "citation": "http://www.specialchem4cosmetics.com/services/inci/ingredient.aspx?id=11009",
          "url": "http://www.specialchem4cosmetics.com/services/inci/ingredient.aspx?id=11009",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2623d523-b178-433c-a5e7-385d77258592",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "bb4cc5de-f9a3-40e2-9cfc-66d36247712f",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391541000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2133ffa8-088f-4a66-9021-4aa1bb1d2c4c",
          "citation": "SRS import [H004M3556Q]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=H004M3556Q",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391541000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "7e76a103-d680-46a0-8ae1-23ae63da8f2e",
          "citation": "POTASSIUM PCA [INCI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "083d6654-efb2-1781-5488-b322db896673",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=4810-50-8",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "8485cfa3-61b7-fd9e-7eb3-05b8cfdfa369",
          "citation": "WHO DRUG DICTIONARY 2019",
          "doc_type": "WHO DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "41efbe1e-d73a-4643-a02b-a060426c0d9b",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "47b2ec1e-a6d4-944b-e7fd-39b182cf4009",
          "citation": "PUBCHEM",
          "doc_type": "PUBCHEM",
          "public_domain": true
        },
        {
          "uuid": "63aec559-e57b-fe22-7662-69f59edb5451",
          "citation": "WHO-DD",
          "doc_type": "WHO DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "b22789ca-3386-d6a0-c7de-6ae173042058",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "ce25ddcb-94a5-4fa7-9193-a56694ca7878",
          "id": "ce25ddcb-94a5-4fa7-9193-a56694ca7878",
          "molfile": "\n  Marvin  01132110392D          \n\n  1  0  0  0  1  0            999 V2000\n   12.6383   -5.4569    0.0000 K   0  3  0  0  0  0  0  0  0  0  0  0\nM  CHG  1   1   1\nM  END",
          "smiles": "[K+]",
          "formula": "K",
          "atropisomerism": "No",
          "charge": 1,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "fafa6fe2-85e2-498c-b89e-cc2585f5616b"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "39.0983",
          "optical_activity": "NONE",
          "stereo_centers": 0
        },
        {
          "uuid": "dce5844e-5e5b-4ad1-b2a0-0f366923a6db",
          "id": "dce5844e-5e5b-4ad1-b2a0-0f366923a6db",
          "molfile": "\n  Marvin  01132111272D          \n\n  9  9  0  0  1  0            999 V2000\n   11.1177   -3.9261    0.0000 C   0  0  2  0  0  0  0  0  0  2  0  0\n   10.8485   -3.1463    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.0236   -3.1613    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.7831   -3.9504    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0032   -4.2196    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   10.4592   -4.4231    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   11.9068   -4.1667    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.5097   -3.6036    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n   12.0930   -4.9704    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  6  1  1  0  0  0  0\n  1  7  1  1  0  0  0\n  2  3  1  0  0  0  0\n  4  3  1  0  0  0  0\n  4  5  2  0  0  0  0\n  6  4  1  0  0  0  0\n  7  8  1  0  0  0  0\n  7  9  2  0  0  0  0\nM  CHG  1   8  -1\nM  END",
          "smiles": "C1CC(=O)N[C@@H]1C(=O)[O-]",
          "formula": "C5H6NO3",
          "atropisomerism": "No",
          "charge": -1,
          "count": 1,
          "stereochemistry": "ABSOLUTE",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "9e150c51-5b5d-426e-a74e-27075e1d6f54"
          },
          "defined_stereo": 1,
          "ez_centers": 0,
          "molecular_weight": "128.1062",
          "optical_activity": "UNSPECIFIED",
          "stereo_centers": 1
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "1132653c-8514-4c95-9a85-cf0f9f00149b",
      "version": "10",
      "structure": {
        "id": "4651d2b1-2ba9-4dc3-8b7d-0514099aa9b0",
        "molfile": "\n  Marvin  01132103412D          \n\n 10  9  0  0  1  0            999 V2000\n   11.9068   -4.1667    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.1177   -3.9261    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0\n   10.4592   -4.4231    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    9.7831   -3.9504    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.0236   -3.1613    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.8485   -3.1463    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0032   -4.2196    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   12.5097   -3.6036    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   12.0930   -4.9704    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n   12.6383   -5.4569    0.0000 K   0  3  0  0  0  0  0  0  0  0  0  0\n  2  1  1  1  0  0  0\n  3  2  1  0  0  0  0\n  3  4  1  0  0  0  0\n  4  5  1  0  0  0  0\n  6  5  1  0  0  0  0\n  2  6  1  0  0  0  0\n  4  7  2  0  0  0  0\n  1  8  2  0  0  0  0\n  1  9  1  0  0  0  0\nM  CHG  2   9  -1  10   1\nM  END",
        "smiles": "C1CC(=O)N[C@@H]1C(=O)[O-].[K+]",
        "formula": "C5H6NO3.K",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ABSOLUTE",
        "defined_stereo": 1,
        "ez_centers": 0,
        "molecular_weight": "167.2045",
        "optical_activity": "UNSPECIFIED",
        "references": [
          "ac4506e6-a4f2-4cce-86c7-39ecf26208cc",
          "2133ffa8-088f-4a66-9021-4aa1bb1d2c4c"
        ],
        "stereo_centers": 1
      },
      "unii": "H004M3556Q"
    }
  ]
}