trisodium 5-[[5-methyl-4-[(4-nitro-2-sulphonatophenyl)azo]-2-(3-sulphonatopropoxy)phenyl]azo]salicylate

Benzoic acid, 2-hydroxy-5-[[5-methyl-4-[(4-nitro-2-sulfophenyl)azo]-2-(3-sulfopropoxy)phenyl]azo]-, trisodium salt

2-Hydroxy-5-[[5-methyl-4-[(4-nitro-2-sodiosulfophenyl)azo]-2-(3-sodiosulfopropoxy)phenyl]azo]benzoic acid sodium salt