1-Naphthol-5,7-disulfonicacid, 2,2'-(3,3'-dihydroxy-4,4'-biphenylylenebisazo)bis[8-amino-, dicopperderiv., tetrasodium salt (6CI); C.I. Direct Blue 76, tetrasodium salt (8CI);Copper, [tetrahydrogen 6,6'-[(3,3'-dihydroxy-4,4'-biphenylylene)bis(azo)]bis[4-amino-5-hydroxy-1,3-naphthalenedisulfonato(4-)]]di-,tetrasodium salt (7CI); Cuprate(4-), [m-[[6,6'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-amino-5-hydroxy-1,3-naphthalenedisulfonato]](8-)]]di-,tetrasodium; Cuprate(4-), [m-[[6,6'-[[3,3'-di(hydroxy-kO)[1,1'-biphenyl]-4,4'-diyl]bis(azo-kN1)]bis[4-amino-5-(hydroxy-kO)-1,3-naphthalenedisulfonato]](8-)]]di-, tetrasodium(9CI); 1,3-Naphthalenedisulfonic acid,6,6'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-amino-5-hydroxy-,copper complex; Benzanil Supra Blue 2GN; C.I. 24411; C.I. Direct Blue 76;Chlorantine Fast Blue 7GL; Chlorantine Fast Blue 7GLL; Direct Blue 76; DurazolBlue 2GN; Durazol Blue 2GNP; Lumicrease Blue 4GL; Lumicrease Sky Blue 4GL; LumicreaseSky Blue 6GUL; Pontamine Fast Blue 6GL; Pyrazol Fast Blue 4GUL; Sirius BlueF4GA; Solantine Blue 6GKS; Solophenyl Blue 6GL