1-Naphthalenesulfonic acid, 4-amino-3-((4'-((2-amino-8-hydroxy-6-sulfo-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-, disodium salt

disodium;6-amino-5-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]-4-hydroxynaphthalene-2-sulfonate

NDHOYLRUTRKFBM-UHFFFAOYSA-L

C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C=CC6=CC(=CC(=C65)O)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]