84145-46-0 Disodium hydrogen 4,5-dihydro-4-((4-(((2-methoxy-5-((2-(sulphonatooxy)ethyl)sulphonyl)phenyl)amino)carbonyl)phenyl)azo)-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate EINECS 282-273-8