2H-1,4-Diazepin-2-one,hexahydro-1-methyl- , with CAS number of 60565-89-1, can be called 1-Methyl-1,4-diazepan-5-one ; 2h-1,4-diazepin-2-one, hexahydro-1-methyl- ; n-methyl-5-homopiperazinone .