5852-25-5 Disodium 1-(3-aminophenyl)-4,5-dihydro-4-((4-(((5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl)amino)carbonyl)phenyl)azo)-5-oxo-1H-pyrazole-3-carboxylate EINECS 227-461-2