United States Pharmacopeia (USP) Reference Standard
Synonym(s): Hydroxymethoxybenzenesulfonic acid monopotassium salt hemihydrate; Sulfogaiacol hemihydrate
Empirical Formula: C7H7KO5S -+ 0.5H2O
Formula Weight: 251.30
Linear Formula: C7H7KO5S -+ 0.5H2O