Benzenesulfonicacid, 5-chloro-2-hydroxy-3-[[3-methyl-5-oxo-1-(m-sulfophenyl)-2-pyrazolin-4-yl]azo]-(8CI); Benzenesulfonic acid,5-chloro-3-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl]azo]-2-hydroxy-(9CI)
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