Synonyms: Ethanesulfonylfluoride, 1,1,2,2-tetrafluoro-2-[1,2,2-trifluoro-1-(trifluoromethyl)-2-[(trifluorovinyl)oxy]ethoxy]-(8CI);Ethanesulfonyl fluoride,2-[1-[difluoro[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro-(9CI);FS 141;Perfluoro(4-methyl-3,6-dioxaoct-7-ene)sulfonyl fluoride;Perfluoro-3,6-dioxa-4-methyl-D7-octylsulfonyl fluoride;