2,5-Cyclohexadiene-1,4-dione, 2,3,5,6-tetrakis(1-aziridinyl)- 4239-06-9 NSC31717 Tetraethylenimino-1,4-benzoquinone Tetraethyleniminobenzo-quinone Tetraethyleniminobenzoquinone p-Benzoquinone, tetrakis(1-aziridinyl)-