{
  "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": "2026-09-09",
    "results": {
      "skip": 0,
      "limit": 1,
      "total": 1
    }
  },
  "results": [
    {
      "codes": [
        {
          "uuid": "b7f54435-8a78-4d39-aa44-77c79646e3b5",
          "code": "65-22-5",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=65-22-5",
          "code_system": "CAS",
          "references": [
            "4a053c2c-8f62-43aa-a012-794fc5cf55c8",
            "ce15055e-0cca-4a46-88cc-d42fab3abeb9"
          ]
        },
        {
          "uuid": "4e02b141-8701-4bc5-baff-b1c1959554d8",
          "code": "m9361",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m9361?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "4a053c2c-8f62-43aa-a012-794fc5cf55c8"
          ]
        },
        {
          "uuid": "b6779a54-7554-4d08-acc4-a94b60c16fd5",
          "code": "DB00147",
          "type": "PRIMARY",
          "url": "http://www.drugbank.ca/drugs/DB00147",
          "code_system": "DRUG BANK",
          "references": [
            "4a053c2c-8f62-43aa-a012-794fc5cf55c8"
          ]
        },
        {
          "uuid": "3e9462cf-a967-4089-95f6-d1b8d74f1593",
          "code": "200-602-5",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.000.547",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "4a053c2c-8f62-43aa-a012-794fc5cf55c8"
          ]
        },
        {
          "uuid": "4a7256ec-3c93-eec9-ee33-be91274dba0c",
          "code": "Pyridoxal hydrochloride",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Pyridoxal_hydrochloride",
          "code_system": "WIKIPEDIA",
          "references": [
            "5b52afc8-b09e-ef04-e302-2e212bd0b7ec"
          ]
        },
        {
          "uuid": "b69d36dc-d246-72f7-650e-7b54a5beaa07",
          "code": "DTXSID0058774",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID0058774",
          "code_system": "EPA CompTox",
          "references": [
            "5b801676-f9b6-f98e-1267-076e0c9f529f"
          ]
        },
        {
          "uuid": "5ea83360-6c5e-4ec1-87e6-f2e28fd9052c",
          "code": "1416KF0QBC",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "2e6ff73d-5626-fddf-c10a-8ff74d35dcd9",
          "code": "6171",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/6171",
          "code_system": "PUBCHEM",
          "references": [
            "da986990-2179-5a69-73bd-3c896db982ea"
          ]
        },
        {
          "uuid": "ae547e87-9cff-60b2-f917-50f480fe6a10",
          "code": "19613",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=19613",
          "code_system": "NSC",
          "references": [
            "ab0aa1a6-340e-92eb-23af-1d1fa39cac2f"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "180e2aa7-c709-4342-802a-a48b24e78bff",
          "type": "ACTIVE MOIETY",
          "related_substance": {
            "uuid": "0c30aed9-4f17-407d-ae9e-a7940d721c77",
            "refuuid": "c21f14f6-d66d-4f2b-a409-66cdb237367a",
            "name": "PYRIDOXAL",
            "unii": "3THM379K8A",
            "linking_id": "3THM379K8A",
            "ref_pname": "PYRIDOXAL",
            "substance_class": "reference"
          }
        },
        {
          "uuid": "877cca13-c449-40a3-909c-ad5989c74fcd",
          "type": "PARENT->SALT/SOLVATE",
          "related_substance": {
            "uuid": "5ca7b56d-9434-444b-8e9f-9cdb9f017bb1",
            "refuuid": "c21f14f6-d66d-4f2b-a409-66cdb237367a",
            "name": "PYRIDOXAL",
            "unii": "3THM379K8A",
            "linking_id": "3THM379K8A",
            "ref_pname": "PYRIDOXAL",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "beadbfe6-537d-4b88-8529-59725eee4eda",
          "name": "3-HYDROXY-5-(HYDROXYMETHYL)-2-METHYL-4-PYRIDINECARBOXALDEHYDE HYDROCHLORIDE",
          "stdName": "3-HYDROXY-5-(HYDROXYMETHYL)-2-METHYL-4-PYRIDINECARBOXALDEHYDE HYDROCHLORIDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "f3a29fe6-560f-4144-b622-23f9a05db027",
            "5505eb8a-93f8-472b-b1c2-377a3e518801"
          ],
          "display_name": false
        },
        {
          "uuid": "50e4a035-ff2e-071f-d43e-e96f14d6310b",
          "name": "NSC-19613",
          "stdName": "NSC-19613",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ab0aa1a6-340e-92eb-23af-1d1fa39cac2f"
          ],
          "display_name": false
        },
        {
          "uuid": "eec32302-a114-4ee4-8312-28c6d51f9112",
          "name": "PYRIDOXAL HCL",
          "stdName": "PYRIDOXAL HCL",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "13bfcbde-5fbf-4574-a8af-fca3fb194e8a"
          ],
          "display_name": false
        },
        {
          "uuid": "a8c7a79b-d7fb-49da-aaf9-623e78e03477",
          "name": "PYRIDOXAL HYDROCHLORIDE",
          "stdName": "PYRIDOXAL HYDROCHLORIDE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "72dd53e2-31a2-4f03-903c-2a11b6dbb156",
            "f3a29fe6-560f-4144-b622-23f9a05db027",
            "5505eb8a-93f8-472b-b1c2-377a3e518801",
            "23ce4d3f-0539-4a03-9464-fe418056df8b",
            "a3160e6d-46fd-4307-ab13-6f79f99e0819"
          ],
          "display_name": true
        },
        {
          "uuid": "ef1bd09a-e5ed-46bb-abc5-ca993e976fcd",
          "name": "PYRIDOXAL HYDROCHLORIDE [MI]",
          "stdName": "PYRIDOXAL HYDROCHLORIDE [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "f3a29fe6-560f-4144-b622-23f9a05db027",
            "5505eb8a-93f8-472b-b1c2-377a3e518801"
          ],
          "display_name": false
        },
        {
          "uuid": "70cabb84-5059-b412-92bf-b55ee63f8e98",
          "name": "Pyridoxal hydrochloride [WHO-DD]",
          "stdName": "PYRIDOXAL HYDROCHLORIDE [WHO-DD]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "07d2f9f9-566e-9248-c6ff-9da0dfad5b62"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "f3a29fe6-560f-4144-b622-23f9a05db027",
          "citation": "MERCK",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "5505eb8a-93f8-472b-b1c2-377a3e518801",
          "citation": "MERCK INDEX",
          "doc_type": "MERCK INDEX",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "13bfcbde-5fbf-4574-a8af-fca3fb194e8a",
          "citation": "FDA-SRS 2010",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "23ce4d3f-0539-4a03-9464-fe418056df8b",
          "citation": "WHO-DD",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "4a053c2c-8f62-43aa-a012-794fc5cf55c8",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493389717000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "cba1f361-5d0c-4e29-90d7-a5c3e1c6e4f1",
          "citation": "SRS import [1416KF0QBC]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=1416KF0QBC",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493389717000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "72dd53e2-31a2-4f03-903c-2a11b6dbb156",
          "citation": "PYRIDOXAL HYDROCHLORIDE [WHO-DD]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "a3160e6d-46fd-4307-ab13-6f79f99e0819",
          "citation": "PYRIDOXAL HYDROCHLORIDE [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "5b52afc8-b09e-ef04-e302-2e212bd0b7ec",
          "citation": "WIKI",
          "url": "https://en.wikipedia.org/wiki/Pyridoxal_hydrochloride",
          "doc_type": "WIKI",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "5b801676-f9b6-f98e-1267-076e0c9f529f",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=65-22-5",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "380dbeec-be97-0352-4822-483c199f6c3b",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "ce15055e-0cca-4a46-88cc-d42fab3abeb9",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "da986990-2179-5a69-73bd-3c896db982ea",
          "citation": "PUBCHEM",
          "doc_type": "PUBCHEM",
          "public_domain": true
        },
        {
          "uuid": "ab0aa1a6-340e-92eb-23af-1d1fa39cac2f",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "07d2f9f9-566e-9248-c6ff-9da0dfad5b62",
          "citation": "WHO-DD",
          "doc_type": "WHO DRUG DICTIONARY",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "114f1657-5602-418c-a877-3e52e66909e1",
          "id": "114f1657-5602-418c-a877-3e52e66909e1",
          "molfile": "\n  Marvin  01132101072D          \n\n  1  0  0  0  0  0            999 V2000\n    3.8777   -2.6332    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\nM  END",
          "smiles": "Cl",
          "formula": "ClH",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "70f1a8b9-3ec0-4bbd-840d-137b616d1975"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "36.4609",
          "optical_activity": "NONE",
          "stereo_centers": 0
        },
        {
          "uuid": "8dbd6371-0723-4d2f-9d79-739b9e1c069a",
          "id": "8dbd6371-0723-4d2f-9d79-739b9e1c069a",
          "molfile": "\n  Marvin  01132107212D          \n\n 12 12  0  0  0  0            999 V2000\n    2.8029   -1.9054    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.0160   -2.3452    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.3937   -1.8669    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.6223   -2.2680    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.6223   -3.0498    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.1029   -3.4432    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.8460   -3.0035    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2934   -3.4586    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2934   -4.3123    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9106   -4.7675    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.0160   -3.0498    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7206   -3.5640    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 11  2  0  0  0  0\n  3  4  2  0  0  0  0\n  4  5  1  0  0  0  0\n  6  5  1  0  0  0  0\n  5  8  2  0  0  0  0\n  7  6  1  0  0  0  0\n  9  8  1  0  0  0  0\n 11  8  1  0  0  0  0\n 10  9  2  0  0  0  0\n 12 11  1  0  0  0  0\nM  END",
          "smiles": "Cc1c(c(C=O)c(cn1)CO)O",
          "formula": "C8H9NO3",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "c891ef3f-31a2-4c8c-b14e-0f8988e51e33"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "167.1623",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "0eb463bb-070f-4437-9f2d-1f1f2ce8784d",
      "version": "12",
      "structure": {
        "id": "bc6d0275-0f9d-499c-b11d-040b26d88005",
        "molfile": "\n  Marvin  01132109452D          \n\n 13 12  0  0  0  0            999 V2000\n    1.2934   -3.4586    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.0160   -3.0498    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.3937   -1.8669    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.6223   -3.0498    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.0160   -2.3452    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.6223   -2.2680    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2934   -4.3123    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9106   -4.7675    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.7206   -3.5640    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.1029   -3.4432    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.8460   -3.0035    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.8029   -1.9054    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.8777   -2.6332    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  2  0  0  0  0\n  3  6  1  0  0  0  0\n  4  1  1  0  0  0  0\n  5  2  1  0  0  0  0\n  6  4  2  0  0  0  0\n  7  1  1  0  0  0  0\n  8  7  2  0  0  0  0\n  9  2  1  0  0  0  0\n 10  4  1  0  0  0  0\n 11 10  1  0  0  0  0\n 12  5  1  0  0  0  0\n  5  3  2  0  0  0  0\nM  END",
        "smiles": "Cc1c(c(C=O)c(cn1)CO)O.Cl",
        "formula": "C8H9NO3.ClH",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "203.6232",
        "optical_activity": "NONE",
        "references": [
          "cba1f361-5d0c-4e29-90d7-a5c3e1c6e4f1",
          "f3a29fe6-560f-4144-b622-23f9a05db027"
        ],
        "stereo_centers": 0
      },
      "unii": "1416KF0QBC"
    }
  ]
}