(2-(4-(Dimethylamino)benzylidene)benzo(b)thien-3(2H)-ylidene)malononitrile S,S-dioxide 2-(p-(Dimethylamino)benzylidene)-3-(dicyanomethylene)-2,3-dihydrobenzothiophene, 1,1-dioxide 75214-61-8 EINECS 278-129-9 Propanedinitrile, (2-((4-(dimethylamino)phenyl)methylene)-1,1-dioxidobenzo(b)thien-3(2H)-ylidene)-