1-Naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-, chromium complex;2-Naphthalenol, 1-((2-hydroxynitrophenyl)azo)-, chromium complex;Chromate(2-), (3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1- naphthalenesulfonato(3-))(1-((2-hydroxynitrophenyl)azo)-2-naphthalenolato(2-))-, sodium hydrogen;Hydrogen sodium (3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))(1-((2-hydroxynitrophenyl)azo)-2-naphtholato(2-))chromate(2-)
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