102424-25-9 Azo dye Cuprate(4-), (mu-((3,3'-methylenebis(6-((5-((2,4-disulfophenyl)azo)-2,4-dihydroxyphenyl)azo)benzoato))(8-)))di-, tetrasodium Cuprate(4-), (mu-((3,3'-methylenebis(6-((5-((2,4-disulfophenyl)azo)-2-(hydroxy-kappaO)-4-hydroxyphenyl)azo-kappaN1)benzoato-kappaO))(8-)))di-, tetrasodium