Potassium guaiacolsulfonate hemihydrate (Potassium Hydroxymethoxybenzenesulfonate, Sulfogaiacol) is used as an expectorant for relieving symptoms of cough and mucus in the chest due to respiratory infections, asthma, colds, or hay fever.
[1] Thi Huong Hoa Le, et al. J Anal Methods Chem. 2019 Mar 7;2019:6143061.
















