1,2-Oxathiolane, 3-methyl-, 2,2-dioxide 1121-03-5 2,4-Butanesultone 2-Butanesulfonic acid, 4-hydroxy-, gamma-sultone (7CI) 3-Methyl-1,2-oxathiolane 2,2-dioxide 4-19-00-00041 (Beilstein Handbook Reference) 4-Hydroxy-2-butanesulfonic acid gamma-sultone BRN 0110592 EINECS 214-325-2