sodium N-acetyl-2-[[2-hydroxy-3-[(2-methoxyanilino)carbonyl]-1-naphthyl]azo]sulphanilate

4-(Acetylamino)-2-[[2-hydroxy-3-[[(2-methoxyphenyl)amino]carbonyl]-1-naphtyl]azo]benzenesulfonic acid sodium salt

Benzenesulfonic acid, 4-(acetylamino)-2-[[2-hydroxy- 3-[[(2-methoxyphenyl)amino]carbonyl]-1-naphthalenyl ]azo]-, monosodium salt