1,4-Cyclohexadiene-1,4-dicarbamic acid, 2,5-bis(1-aziridinyl)-3,6-dioxo-, diethyl ester 57998-68-2 AZQ Carbamic acid, [2,5-bis(1-aziridinyl)-3,6-dioxo-1,4-cyclohexadiene-1,4-diyl]bis-, diethyl ester DIAZIQUONE NSC 182986 NSC182986