53523-90-3 Benzoic acid, 3,3'-(1,2-ethenediylbis((3-sulfo-4,1-phenylene)azo))bis(6-hydroxy-5-methyl-, tetralithium salt EINECS 258-605-2 Tetralithium 5,5'-(vinylenebis((3-sulphonato-4,1-phenylene)azo))bis(3-methylsalicylate)