66256-76-6 68110-19-0 Copper, (tetrahydrogen 1-hydroxy-2-((((2-hydroxy-3,6-disulfo-1-naphthenyl)azo)-3,3'-dihydroxy-4,4'-biphenylene)azo)-8-((3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)azo)-3,6-naphthalenedisulfonato-)di-, tetrasodium salt Cuprate(4-), (mu-(5-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-((4'-((3,6-disulfo-2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)-3,3'-di(hydroxy-kappaO)(1,1'-biphenyl)-4-yl)azo-kappaN1)-4-(hydroxy-kappaO)-2,7-naphthalenedisulfonato(8-)))di-, tetrasodium Cuprate(4-), (mu-(5-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-((4'-((3,6-disulfo-2-hydroxy-1-naphthalenyl)azo)-3,3'-dihydroxy(1,1'-biphenyl)-4-yl)azo)-4-hydroxy-2,7-naphthalenedisulfonato(8-)))di-, tetrasodium EINECS 266-282-4