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Benzenesulfonic acid,4,4'-[(phenylmethylene)bis[4,1-phenylene-2,1-diazenediyl(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]]bis-,sodium salt (1:2)
Benzenesulfonic acid,4,4'-[(phenylmethylene)bis[4,1-phenylene-2,1-diazenediyl(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]]bis-,sodium salt (1:2) CAS NO.6459-70-7