1,1,2,2-Tetrafluoro-2-(1,2,2-trifluoro-1-(trifluoromethyl)-2-((trifluorovinyl)oxy)ethoxy)ethanesulphonyl fluoride 128931-18-0 16090-14-5 76634-27-0 86329-52-4 EINECS 240-249-4 Ethanesulfonyl fluoride, 2-(1-(difluoro((trifluoroethenyl)oxy)methyl)-1,2,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoro-