Ethylene sulfite3741-38-6100 % similar 2-Oxo-1,3,2-dioxathiane4176-55-073 % similar 2,4,8,10-Tetraoxa-3λ4,9λ4-dithiaspiro[5.5]undecane-3,9-dione3670-93-750 % similar Diethyl sulfite623-81-450 % similar Dimethyl sulfite616-42-233 % similar Endosulfan115-29-732 % similar