164416-13-1 (TETRASODIUM SALT) 4,4'-Bis(2-carboxy-4,6-dihydroxyphenylazo)stilbene-2,2'-disulfonic acid (*tetrasodium salt*) AIDS-032074 AIDS032074 Benzoic acid, 2,2'-[(1E)-1,2-ethenediylbis[(1E)-(3-sulfo-4,1-phenylene)azo]]bis[3,5-dihydroxy- NSC634748 (TETRASODIUM SALT) Resobene (*tetrasodium salt*)