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2-[1-(m-Chlorophenyl)-3-methyl-5-oxo-2-pyrazolin-4-ylazo]-5-sodiooxysulfonylbenzoic acid sodium salt Structure

2-[1-(m-Chlorophenyl)-3-methyl-5-oxo-2-pyrazolin-4-ylazo]-5-sodiooxysulfonylbenzoic acid sodium salt