1,1'-Hexamethylenebis(3,3-dimethylurea) 20575-76-2 AI3-51108 BRN 2116874 NSC 255317 Urea, 1,1'-hexamethylenebis(3,3-dimethyl- Urea, N,N''-1,6-hexanediylbis(N',N'-dimethyl- (9CI)