73003-93-7 Chromate(2-), (2-amino-4-(amino-kappaN)-5-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)benzenesulfonato(3-))(1-((2-(hydroxy-kappaO)-4-nitrophenyl)azo-kappaN1)-2-naphthalenolato(2-)-kappaO)-, dihydrogen