1,3-DIAZEPIN-2-ONE, HEXAHYDRO-1,3-DIMETHYL- 16597-38-9 2H-1,3-Diazepin-2-one, hexahydro-1,3-dimethyl- (8CI,9CI) BRN 0636605 Hexahydro-1,3-dimethyl-1,3-diazepin-2-one N,N'-Dimethyltetramethyleneurea