2,3,3,3-Tetrafluoro-2-(1,1,2,3,3,3-hexafluoro-2-(pentafluorophenoxy)propoxy)propionyl fluoride 25711-77-7 EINECS 247-202-7 Propanoyl fluoride, 2,3,3,3-tetrafluoro-2-(1,1,2,3,3,3-hexafluoro-2-(pentafluorophenoxy)propoxy)-