Synonyms: 2,7-Naphthalenedisulfonicacid,3-[[4'-[(6-anilino-1-hydroxy-3-sulfo-2-naphthyl)azo]-3,3'-dimethoxy-4-biphenylyl]azo]-5,6-dihydroxy-,trisodium salt (8CI); 2,7-Naphthalenedisulfonic acid,5,6-dihydroxy-3-[[4'-[[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-,trisodium salt (9CI); C.I. 24350; Cupramine Brilliant Blue RB