1-Dimethylamino-2,3-di(4'-hydroxyphenyl)-penten(2) [German] 37013-34-6 4,4'-(1-((Dimethylamino)methyl)-2-ethyl-1,2-ethenediyl)bisphenol BRN 2755724 Phenol, 4,4'-(1-((dimethylamino)methyl)-2-ethyl-1,2-ethenediyl)bis-