6-Hydroxy-2-naphthalenesulfonic acid Monopotassium salt
2-Naphthalenesulfonic acid, 6-hydroxy-, potassium salt (1:1); 2-Naphthalenesulfonic acid, 6-hydroxy-, monopotassium salt; Schaeffer's acid, monopotassium salt; Potassium 6-hydroxynaphthalene-2-sulphonate; Schaeffer's Acid Potassium Salt; potassium 6-hydroxynaphthalene-2-sulfonate