1,1'-(Hexamethylenedicarbamoyl)diaziridine 1,6-Hexamethylenebisethyleneurea 1-Aziridinecarboxamide, N,N'-1,6-hexanediylbis- 1-Aziridinecarboxamide, N,N'-hexamethylenebis- 2271-93-4 HBC Hexamethylenebis(ethyleneurea) Hexamethylenediethyleneurea N,N'-Hexamethylene bis-1-aziridinyl carboxamide N,N'-Hexamethylene-bis(1-aziridinecarboxamide) N,N'-Hexamethylenebis(1-aziridinecarboxamide) NSC146970 OM 53139 Olin 53139