83673 <common-name>4-Hydroxy-2-pyridone</common-name> <description>4-Hydroxy-2-pyridone belongs to the hydropyridines, a subclass of pyridines and derivatives within the organic compounds. It is an organoheterocyclic compound with the chemical formula C5H5NO2 and an average molecular weight of 111.10 g/mol.</description> <cas>626-03-9</cas> <pubchem-id>54696004</pubchem-id> <chemical-formula>C5H5NO2</chemical-formula> <weight>111.1</weight> <appearance nil="true"/> <melting-point nil="true"/> <boiling-point nil="true"/> <density nil="true"/> <solubility nil="true"/> <specific-gravity nil="true"/> <flash-point nil="true"/> <vapour-pressure nil="true"/> <route-of-exposure nil="true"/> <target nil="true"/> <mechanism-of-toxicity nil="true"/> <metabolism nil="true"/> <toxicity nil="true"/> <lethaldose nil="true"/> <carcinogenicity nil="true"/> <use-source nil="true"/> <min-risk-level nil="true"/> <health-effects nil="true"/> <symptoms nil="true"/> <treatment nil="true"/> <created-at type="dateTime">2026-04-04T19:33:52Z</created-at> <updated-at type="dateTime">2026-08-22T23:44:30Z</updated-at> <interacting-proteins nil="true"/> <wikipedia nil="true"/> <uniprot-id nil="true"/> <kegg-compound-id nil="true"/> <omim-id nil="true"/> <chebi-id nil="true"/> <biocyc-id nil="true"/> <ctd-id nil="true"/> <stitch-id nil="true"/> <drugbank-id nil="true"/> <pdb-id nil="true"/> <actor-id nil="true"/> <organism nil="true"/> <export type="boolean">true</export> <metabolizing-proteins nil="true"/> <transporting-proteins nil="true"/> <moldb-smiles>OC1=CC(O)=NC=C1</moldb-smiles> <moldb-formula>C5H5NO2</moldb-formula> <moldb-inchi>InChI=1/C5H5NO2/c7-4-1-2-6-5(8)3-4/h1-3H,(H2,6,7,8)</moldb-inchi> <moldb-inchikey>ZEZJPIDPVXJEME-UHFFFAOYSA-N</moldb-inchikey> <moldb-average-mass type="decimal">111.1</moldb-average-mass> <moldb-mono-mass type="decimal">111.0320284</moldb-mono-mass> <origin nil="true"/> <state nil="true"/> <logp>-0.4</logp> <hmdb-id nil="true"/> <chembl-id nil="true"/> <chemspider-id nil="true"/> <structure-image-file-name nil="true"/> <structure-image-content-type nil="true"/> <structure-image-file-size type="integer" nil="true"/> <structure-image-updated-at type="dateTime" nil="true"/> <biodb-id nil="true"/> <synthesis-reference nil="true"/> <structure-image-caption nil="true"/> <chemdb-id>CHEM079566</chemdb-id> <dsstox-id>DTXSID90274238</dsstox-id> <toxcast-id nil="true"/> <stoff-ident-origin nil="true"/> <stoff-ident-id nil="true"/> <susdat-id>NS00043429</susdat-id> <iupac>4-hydroxy-1H-pyridin-2-one</iupac> <moldb-polar-surface-area nil="true"/> <moldb-refractivity nil="true"/> <moldb-polarizability nil="true"/> <moldb-rotatable-bond-count nil="true"/> <moldb-acceptor-count nil="true"/> <moldb-donor-count nil="true"/> <moldb-pka-strongest-acidic nil="true"/> <moldb-pka-strongest-basic nil="true"/> <moldb-physiological-charge nil="true"/> <moldb-number-of-rings nil="true"/> <moldb-alogps-logp nil="true"/> <moldb-alogps-logs nil="true"/> <moldb-alogps-solubility nil="true"/> <kingdom>Organic compounds</kingdom> <superklass>Organoheterocyclic compounds</superklass> <klass>Pyridines and derivatives</klass> <subklass>Hydropyridines</subklass> <paper-count type="integer">581</paper-count> <sync-id>CED0010505</sync-id> <structure-inchikey>ZEZJPIDPVXJEME-UHFFFAOYSA-N</structure-inchikey> <structure-fingerprint>10000000000002400000000000000000000000000000000000000000000000000004000000000000000000000000000000000000040000000001000010000000080000000100000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000080000000000000000080000000001000000000000000000000000002000000000000000000000000000000000000200000000000000000000000000002040000000000000000000000000000000000000000000</structure-fingerprint> <structure-pattern-fingerprint>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</structure-pattern-fingerprint> <structure-pickle>ï¾­Þ������������������������€���h�������@(������@h�������@(�������h�������@(������@h�������@h��������� ��h���h��� ��h���h���h���h�B���������������������</structure-pickle> <structure-indexed-at type="dateTime">2026-09-19T04:29:18Z</structure-indexed-at> </compound>