<unk>  is the sodium salt of γ-hydroxybutyric acid (GHB). Its systematic chemical name is sodium 4-hydroxybutanoate, though synonyms like sodium γ-hydroxybutyrate are commonly used. Its condensed structural formula is (molecular formula: ) and its molar mass is 126.09 g mol−1. It is highly hydrophilic. Treating the salt with acid allows the carboxylic acid form of the compound, which is GHB, to be recovered.
Sodium oxybate
Amine fluoride
Sodium thiosulfate 
Sodium fluoride
Potassium fluoride
Perchloryl fluoride
Silver diammine fluoride
Disufenton sodium