(4-(Bis(4-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)dimethylammonium acetate 67939-65-5 EINECS 267-847-8 Methanaminium, N-(4-(bis(4-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, acetate Methanamium N-(4-(bis(4-dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, acetate