Benzenesulfonicacid,4-[4-[[2,5-dimethoxy-4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-(9CI); Benzenesulfonic acid,p-[4-[[4-[(2-hydroxyethyl)sulfonyl]-2,5-dimethoxyphenyl]azo]-3-methyl-5-oxo-2-pyrazolin-1-yl]-,hydrogen sulfate (7CI)
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