98171-50-7 Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)phenylmethylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, compd. with N,N'-bis(Ph and tolyl and xylyl)guanidine EINECS 308-658-3