7,7'-(Imino)bis(4-hydroxy-3-((5-((methylamino)sulfonyl)-2-hydroxyphenyl)azo)-2-naphthalenesulfonic acid), complex with copper and ammonia, ammonium sodium salt 7,7'-(Imino)bis(4-hydroxy-3-((5-((methylamino)sulfonyl)-2-hydroxyphenyl)azo)-2-naphthalenesulfonic acid), complex with copper, ammonium sodium salt 72905-93-2 Cuprate(2-), (mu-((7,7'-iminobis(4-hydroxy-3-((2-hydroxy-5-((methylamino)sulfonyl)phenyl)azo)-2-naphthalenesulfonato))(6-)))di-, ammonium sodium