Also Called: Cuprate(4-), [.mu.-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Cuprate(4-), [μ-[[4,4'-[(3,3'-dihydroxy[ 1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxy -2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Cuprate(4-), [.mu.-[[4,4'-[[3,3'-di(hydroxy-.kappa.O) [1,1'-biphenyl]-4,4'-diyl]bis(azo- .kappa.N1)]bis[3-(hydroxy-.kappa.O)-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium [CI Direct Blue 80];Cuprate(4-), [.mu.-[[4,4'-[[3,3'-di(hydroxy-.kappa.O)[1,1'-biphenyl]-4,4'-diyl]bis(2,1-diazenediyl-.kappa.N1)]bis[3-(hydroxy-.kappa.O)-2,7-naphthalenedisulfonato]](8-)]]di-, sodium (1:4);Cuprate(4-), [µ-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Tetrasodium [μ-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-);Cuprate(4-), [.mu.-[[4,4'-[[3,3'-di(hydroxy-.kappa.O)[1,1'-biphenyl]-4,4'-diyl]bis(azo-.kappa.N1)]bis[3-(hydroxy-.kappa.O)-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Cuprate(4-), [μ-[[4,4'-[[3,3'-di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[3-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;Cuprate(4-), [μ-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium;C.I. Direct Blue 80;Tetrasodium [.mu.-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxynaphthalene-2,7-disulfonato]]-(8-)]]dicuprate(4-);Cuprate(4-), [μ-[[4,4'-[[3,3'-di(hydroxy-κO) [1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[3-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium [CI Direct Blue 80];Cuprate(4-), [μ-[[4,4'-[[3,3'-di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(2,1-diazenediyl-κN1)]bis[3-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-, sodium (1:4);[μ-[[4,4'-[[3,3'-二(羟基-κO)(1,1'-二苯基)-4,4'-二基]双(偶氮-κN')]双[3-(羟基-κO)-2,7-萘二磺酸盐]](8-)]]二铜酸(4-)四钠盐;Tetrasodium [μ-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxynaphthalene-2,7-disulfonato]]-(8-)]]dicuprate(4-);Cuprate(4-), [µ-[[4,4'-[[3,3'-di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[3-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium