5-Amino-3-((3-chloro-2-hydroxy-5-sulfophenyl)azo)-4-hydroxy-2,7-naphthalenedisulfonic acid, trisodium salt, copper complex 70776-13-5 Cuprate(3-), (5-amino-3-((3-chloro-2-(hydroxy-kappaO)-5-sulfophenyl)azo-kappaN1)-4-(hydroxy-kappaO)-2,7-naphthalenedisulfonato(5-))-, trisodium