1H-Pyrazolium, 2,3-dimethyl-5-((2-methyl-1H-indol-3-yl)azo)-1-phenyl-, chloride 2,3-Dimethyl-5-((2-methyl-1H-indol-3-yl)azo)-1-phenyl-1H-pyrazolium chloride 33639-59-7 EINECS 251-612-1