Synonyms: 1-Naphthalenesulfonicacid,4-amino-6-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-,disodium salt (9CI); 1-Naphthalenesulfonic acid,4-amino-6-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-3,3'-dimethoxy-4-biphenylyl]azo]-5-hydroxy-,disodium salt (8CI); C.I. 24375; Zambesi Black BR