Synonyms: (2E)-2,3-Diphenylbut-2-enedinitrile;(E)-.alpha.,.alpha.'-Dicyanostilbene;(E)-.alpha.,.alpha.'-Stilbenedicarbonitrile;(E)-alpha,alpha'-Dicyanostilbene;(E)-alpha,alpha'-Stilbenedicarbonitrile;2-butenedinitrile, 2,3-diphenyl-, (2E)-;2-Butenedinitrile, 2,3-diphenyl-, (E)-;Fumaronitrile, diphenyl-