126513-99-3 2-Naphthalenesulfonic acid, 6-amino-3-((4-((4-(bis(2-hydroxyethyl)amino)phenyl)azo)-2-methoxyphenyl)azo)-4-hydroxy- 6-Amino-3-((4-((4-(bis(2-hydroxyethyl)amino)phenyl)azo)-2-methoxyphenyl)azo)-4-hydroxy-2-naphthalenesulfonic acid