disodium 4-hydroxy-3-[[4-[2-(sulphonatooxy)ethoxy]phenyl]azo]-7-[(2,5,6-trichloro-4-pyrimidinyl)amino]naphthalene-2-sulphonate

2-Naphthalenesulfonic acid, 4-hydroxy-3-[[4-[2-(sulfooxy)ethoxy]phenyl]azo]-7-[(2,5,6-trichloro-4-pyrimidinyl)amino]-, disodium salt

4-Hydroxy-3-[[4-[2-[(sodiooxysulfonyl)oxy]ethoxy]phenyl]azo]-7-[(2,5,6-trichloro-4-pyrimidinyl)amino]-2-naphthalenesulfonic acid sodium salt