Syonyms Name: 2-(2-(4-(((Aminoiminomethyl)hydrazono)methyl)phenyl)ethenyl)-1-methylimidazo(1,2-a)pyridinium, salt with 4-methylbenzenesulfonic acid (1:1), mono(4-methylbenzenesulfonate); 2-[2-(4-{[(diaminomethylidene)hydrazinylidene]methyl}phenyl)ethenyl]-1-methyl-1H-i