25317-10-6 EINECS 246-822-5 Hydrogen (4-((4-(dimethylamino)phenyl)(2-hydroxy-3,6-disulphonato-1-naphthyl)methylene)cyclohexa-2,5-dien-1-ylidene)dimethylammonium Methanaminium, N-(4-((4-(dimethylamino)phenyl)(2-hydroxy-3,6-disulfo-1-naphthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, hydroxide, inner salt