disodium 5-[[2-methoxy-5-methyl-4-[(4-nitro-2-sulphonatophenyl)azo]phenyl]azo]salicylate

5-[[2-Methoxy-5-methyl-4-(2-sulfo-4-nitrophenyl) azo] phenylazo]-2-hydroxybenzoic acid, disocium salt

2-Hydroxy-5-[[2-methoxy-5-methyl-4-[(4-nitro-2-sulfophenyl) azo] phenyl] azo]benzoic acid, disodium salt

Benzoic acid, 2-hydroxy-5-[[2-methoxy-5-methyl-4-[(4-nitro-2-sulfophenyl) azo]phenyl] azo]-, disodium salt