alpha-hydroxy ketone secondary alpha-hydroxy ketone acyloin secondary alpha-hydroxy-ketone 58.036 CHEBI:2468 An alpha-hydroxy ketone in which the carbonyl group and the hydroxy group are linked by a carbon bearing one hydrogen and one organyl group. Secondary alpha-hydroxy ketones are also known as acyloins, and are formally derived from reductive coupling of two carboxylic acid groups. secondary alpha-hydroxyketone Wikipedia:Acyloin chebi_ontology C2H2O2R2 58.00548 C(C(=O)*)(O)([H])* acyloins secondary alpha-hydroxyketones 0 secondary alpha-hydroxy ketones secondary alpha-hydroxy-ketones secondary alcohol