disodium 7-[(4-chloro-6-methoxy-1,3,5-triazin-2-yl)methylamino]-4-hydroxy-3-[(2-sulphonatophenyl)azo]naphthalene-2-sulphonate

7-[(4-Chloro-6-methoxy-1,3,5-triazin-2-yl)methylamino]-4-hydroxy-3-[[2-(sodiooxysulfonyl)phenyl]azo]-2-naphthalenesulfonic acid sodium salt