primary alcohol *C(O)([H])[H] 1-Alcohol 31.018 31.034 A primary alcohol is a compound in which a hydroxy group, -OH, is attached to a saturated carbon atom which has either three hydrogen atoms attached to it or only one other carbon atom and two hydrogen atoms attached to it. CH3OR CHEBI:13676 CHEBI:14887 CHEBI:15734 CHEBI:26262 CHEBI:57489 CHEBI:8406 KEGG:C00226 Primary alcohol a primary alcohol chebi_ontology primary alcohols alcohol