3-[(1,2-dimethyl-1H-indol-3-yl)azo]-1,5-dimethyl-2-phenyl-1H-pyrazolium methyl sulphate;1H-Pyrazolium, 3-[(1,2-dimethyl-1H-indol-3-yl)azo]-1,5-dimethyl-2-phenyl-, methyl sulfate
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