4238-92-0 AI3-51028 BRN 1310681 Butylamino-bis(1-aziridinyl)phosphine oxide ENT 51028 NSC 51230 P,P-Bis(1-aziridinyl)-N-butylaminophosphine oxide P,P-Bis(1-aziridinyl)-N-butylphosphinic amide P,P-Di(1-aziridinyl)-N-butylphosphinic amide Phosphine oxide, bis(1-aziridinyl)butylamino- Phosphinic amide, P,P-bis(1-aziridinyl)-N-butyl-