(4-(4-(Diethylamino)-3'-((2,4-dinitrophenyl)amino)sulphonatobenzhydrylidene)cyclohexa-2,5-dien-1-ylidene)diethylammonium 85188-25-6 EINECS 286-214-7 Ethanaminium, N-(4-((4-(diethylamino)phenyl)(3-((2,4-dinitrophenyl)amino)sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt