2,5-Cyclohexadiene-1,4-dione, 2,5-bis(1-aziridinyl)-3,6-dipropoxy- 436-40-8 Bayer E 39 Cytostaticum E 39 Inproquone NSC17261 RP 6870 Zytostatika p-Benzoquinone, 2,5-bis(1-aziridinyl)-3,6-dipropoxy-