76-96-0 Aziridine, 1,1',1''-phosphinothioylidynetris[2-methyl- ENT 161A ENT 50782 Maps Metapside Methiotepa NSC54055 Phosphine sulfide, tris(2-methyl-1-aziridinyl)- Tris(2-methyl-1-aziridinyl)phosphine sulfide