Benzoicacid, 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-(9CI); Benzoic acid, o-(3-methyl-5-oxo-1-p-sulfophenyl-2-pyrazolin-4-ylazo)-(6CI)
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