has part has part has_part carbamoyl group primary amide organonitrogen compound organooxygen compound carboxamide 42.01680 primary carboxamide 0 carboxamides chebi_ontology carboxamides CHEBI:35354 CHEBI:37622 CHEBI:35355 CNOR3 [*]C(=O)N([*])[*] An amide of a carboxylic acid, having the structure RC(=O)NR2. The term is used as a suffix in systematic name formation to denote the -C(=O)NH2 group including its carbon atom. 41.99799