Synonyms: 5-Quinolinesulfonicacid, 7,7'-[(1E)-1,2-ethenediylbis[(1E)-(3-sulfo-4,1-phenylene)azo]]bis[8-hydroxy-,tetrasodium salt (9CI); 5-Quinolinesulfonic acid,7,7'-[1,2-ethenediylbis[(3-sulfo-4,1-phenylene)azo]]bis[8-hydroxy-, tetrasodiumsalt, (E,E,E)-; Quinobene