1H-Pyrazolium, 3-((1,2-dimethyl-1H-indol-3-yl)azo)-1,5-dimethyl-2-phenyl-, methyl sulfate 3-((1,2-Dimethyl-1H-indol-3-yl)azo)-1,5-dimethyl-2-phenyl-1H-pyrazolium methyl sulphate 89923-54-6 92908-58-2 93951-28-1 EINECS 289-545-5