disodium 6-amino-3-[[4-[(5-chloro-2,6-difluoropyrimidin-4-yl)amino]-2-sulphonatophenyl]azo]-4-hydroxynaphthalene-2-sulphonate

6-Amino-3-[[4-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-(sodiosulfo)phenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt