CAS: 1633-83-6 Molecular Formula: C4 H8 O3 S Molecular Weight (g/mol): 136.17 Synonym: 1,2-Oxathiane 2,2-Dioxide,4-Hydroxy-1-butanesulfonic Acid δ-Sultone,1,4-Butane Sultone,Butane Sultone,NSC 71999,δ-Butane Sultone,δ-Valerosultone,Sulfobutylbetadex EP impurity B IUPAC Name: oxathiane 2,2-dioxide SMILES: O=S1(=O)CCCCO1