Also Called: Cuprate(4-), [μ-[[3,3'-[(3,3'-dihydroxy[ 1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino -4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;C.I. Direct Blue 218;Tetrasodium 3,3'-[(3,3'-dimethoxy-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis(5-amino-4-hydroxy-2,7-naphthalenedisulfonato)dicuprate(II);Cuprate(4-), [.mu.-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;CI Direct Blue 218;Cuprate(4-), [.mu.-[[3,3'-[[3,3'-di(hydroxy-.kappa.O) [1,1'-biphenyl]-4,4'-diyl]bis(azo- .kappa.N1)]bis[5-amino-4-(hydroxy-.kappa.O)-2,7-naphthalenedisulfonato]](8-)]] di-, tetrasodium [CI Direct Blue 218];Cuprate(4-), [.mu.-[[3,3'-[[3,3'-di(hydroxy-.kappa.O)[1,1'-biphenyl]-4,4'-diyl]bis(2,1-diazenediyl-.kappa.N1)]bis[5-amino-4-(hydroxy-.kappa.O)-2,7-naphthalenedisulfonato]](8-)]]di-, sodium (1:4);Cuprate(4-), [µ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Tetrasodium [μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-);CUPRATE(4-), [μ-[[3,3'-[[3,3'-DI(HYDROXY-κO)[1,1'-BIPHENYL]-4,4'-DIYL]BIS(AZO-κN1)]BIS[5-AMINO-4-(HYDROXY-κO)-2,7-NAPHTHALENEDISULFONATO]](8-)]]DI-, TETRASODIUM;Cuprate(4-), [.mu.-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato(8-)]]di-, tetrasodium;TETRASODIUM [.MU.-[[3,3'-[(3,3'-DIHYDROXY[1,1'-BIPHENYL]-4,4'-DIYL)BIS(AZO)]BIS [5-AMINO-4-HYDROXYNAPHTHALENE-2,7-DISULPHONATO]](8-)]]DICUPRATE;Cuprate(4-), [μ-[[3,3'-[[3,3'-di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(2,1-diazenediyl-κN1)]bis[5-amino-4-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-, sodium (1:4);Cuprate(4-), [μ-[[3,3'-[[3,3'-di(hydroxy-κO) [1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[5-amino-4-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]] di-, tetrasodium [CI Direct Blue 218];C.I. 24401;Cuprate(4-), [μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato(8-)]]di-, tetrasodium;Cuprate(4-), [μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Cuprate(4-), [µ-[[3,3'-[[3,3'-di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[5-amino-4-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Tetrasodium [μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis [5-amino-4-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate;C.I.直接蓝202