ZINCON MONOSODIUM SALT, 2-[N'''-(2-hydroxy-5-sulfo-phenyl)-3-phenyl-formazano]-benzoic acid,sodium-salt, 2-[N'''-(2-Hydroxy-5-sulfo-phenyl)-3-phenyl-formazano]-benzoesaeure,Natrium-Salz, 5-(o-Carboxyphenyl)-1-(2-hydroxy-5-sulfophenyl)-3-phenyl forMazan, ZINCON SODIUM, 2-CARBOXY-2'-HYDROXY-5'-SULFOFORMAZYLBENZENE SODIUM SALT, ZINCON extrapure AR