4,4'-[Carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)-2,1-diazenediyl]]bis[5-hydroxy-2,7-naphthalenedisulfonic acid sodium salt; Dialuminous Red 4BL; Diazol Light Red 6BL; Dicorel Red L 6A; Direct Fast Red L 6A; Direct Light Red M 6BLL; Direct Lightfast Red S