ketone http://purl.bioontology.org/ontology/SNOMEDCT/59431004 http://purl.obolibrary.org/obo/CHEBI_17087 http://purl.obolibrary.org/obo/NCIT_C94716 https://en.wikipedia.org/wiki/Category:Ketones https://en.wikipedia.org/wiki/Ketone A compound in which a carbonyl group is bonded to two carbon atoms: R2C=O (neither R may be H). Organic compounds with a carbonyl group (C=O) bonded to two other carbon atoms as the skeleton structure. Acetone is the simplest ketone compound. ketones carbonyl compound The Complete Dictionary of Sexology