1-Methyl-1-(p-tolyl)-2-((1,3,3-trimethyl-2-indolinylidene)methyl)diazenium methyl sulfate 60568-41-4 Diazenium, 2-((1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)methyl)-1-methyl-1-(4-methylphenyl)-, methyl sulfate