Tetrafluoroethane beta-sultone (CAS No.697-18-7), its synonyms are 1,2-Oxathietane, 3,3,4,4-tetrafluoro-, 2,2-dioxide ; 3,3,4,4-Tetrafluoro-1,2-oxathietane 2,2-dioxide ; Tetrafluoro-1,2-oxathietane-2,2-dioxide .