barium bis[6-chloro-4-[(2-hydroxy-1-naphthyl)azo]toluene-3-sulphonate]

Bis[4-chloro-2-[(2-hydroxy-1-naphthalenyl)azo]-5-methylbenzenesulfonic acid]barium salt

4-Chloro-2-[(2-hydroxy-1-naphthalenyl)azo]-5-methylbenzenesulfonic acid, barium salt (2:1)

Benzenesulfonic acid, 4-chloro-2-(2-hydroxy-1-naphthalenyl)azo-5-methyl-, barium salt (2:1)