Synonyms: 2,7-Naphthalenedisulfonicacid,5-amino-3-[[4'-[(8-amino-1-hydroxy-5-sulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-4-hydroxy-,trisodium salt (9CI); 2,7-Naphthalenedisulfonic acid,5-amino-3-[[4'-[(8-amino-1-hydroxy-5-sulfo-2-naphthyl)azo]-3,3'-dimethyl-4-biphenylyl]azo]-4-hydroxy-,trisodium salt (8CI); Benzo Cyanine B; C.I. 23835; NSC 51537