17236-22-5 2,4-Dimethyltetramethylene sulfone,1-dioxide 3-Iodosulfolane 3-Iodotetrahydrothiophene 1,1-dioxide BRN 1237637 Tetrahydro-2,4-dimethylthiophene 1,1-dioxide Tetrahydro-3-iodothiophene 1,1-dioxide Thiophene, tetrahydro-3-iodo-, 1,1-dioxide