4-Amino-5-hydroxy-3-((4-nitrophenyl)azo)-6-(phenylazo)naphthalene-2,7-disulphonic acid, sodium salt

Histological dye and textile dye

Benzoic acid, 2-hydroxy-5-((4-((((2-methoxy-4-((3-sulfophenyl)azo)phenyl)amino)carbonyl)amino)phenyl)azo)-, disodium salt