13637-84-8 73571-19-4 AI3-27293 Chloro fluoro sulfone Chlorosulfonyl fluoride Chlorosulphonyl fluoride EINECS 237-126-2 Fluorosulfonyl chloride SULFURYL CHLORIDE FLUORIDE Sulfonyl chloride fluoride Sulfuryl chlorofluoride Sulfuryl fluorochloride TL 212