ketone a ketone KEGG:C01450 CHEBI:24974 ketones ketones [*]C([*])=O CHEBI:8742 CHEBI:6127 CHEBI:13427 28.010 cetone CHEBI:13646 chebi_ontology A compound in which a carbonyl group is bonded to two carbon atoms: R2C=O (neither R may be H). Wikipedia:Ketone R-CO-R' CHEBI:17087 0 COR2 27.99491 Ketone Keton carbonyl compound