87912-16-1 Chromium, (6-(amino-kappaN)-5-((2-(hydroxy-kappaO)-4-nitrophenyl)azo-kappaN1)-1-naphthalenesulfonato(3-))- Chromium, (6-amino-5-((2-hydroxy-4-nitrophenyl)azo)-1-naphthalenesulfonato(3-))-