83232-50-2 EINECS 280-284-2 Sodium (N-(4-hydroxy-3-((2-hydroxy-8-(mesylamino)-1-naphthyl)azo)-5-nitrophenyl)acetamidato(2-))(4-hydroxy-3-((2-hydroxy-1-naphthyl)azo)benzenesulphonamidato(2-))chromate(1-)