fluoride ; hfpo dimer, acid fluoride ; poly[[1,1,2-trifluoro-2-(trifluoromethyl)-1,2-ethanediyl]oxy], alpha-fluoro-omega-[1,2,2,2-tetrafluoro-1-(fluorocarbonyl)ethyl]- ; alpha-fluoro-omega-(1,1,1,2,3-pentafluoro-3-oxopropan-2-yl)poly{[1,1,2-trifluoro-2-(trifluoromethyl)ethylene]oxy} ; hfpo oligomer acid fluorides (mixture) ; hfpo dimer, acid fluoride ; perfluoro(2-methyl-3-oxahexanoyl) fluoride ; 2-(heptafluoropropoxy)tetrafluoropropionyl ; 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propanoyl fluoride ; propanoyl fluoride, 2,3,3,3-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)- ; undecafluoro-(2-methyl-3-oxahexanoyl) fluoride ; perfluoro(2-methyl-3-oxahexanoyl) fluoride 97% ; perfluoro(2-methyl-3-oxahexanoyl) fluoride ; 2,3,3,3-tetrafluoro-2-(perfluoropropoxy)propanoyl fluoride ; undecafluoro(2-methyl-3-oxahexanoyl) fluoride ; perfluoro(2-methyl-3-oxahexanoyl) fluoride,(hexafluoropropen oxide dimer) ; hfpo dimer ; acid fluoride ; 2-(heptafluoropropoxy)tetrafluoropropionylfluoride ; 2-(heptafluoropropoxy)tetrafluoropropionyl fluoride ; perfluoro(2-methyl-3-oxahexanoyl)fluoride ; undecafluoro-(2-methyl-3-oxahexanoyl)fluoride ; 2-(heptafluoropropoxy)-2,3,3,3-tetrafluoropropionyl fluoride ; propanoyl fluoride, 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)- ; 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propionyl fluoride ; dodecafluoro-(2-methyl-3-oxahexanoyl) fluoride ; alpha-[1,2,2,2-tetrafluoro-1-(fluorocarbonyl)ethyl]-omega-[tetrafluoro(trifluoromethyl)ethoxy]-poly{oxy[trifluoro(trifluoromethyl)-1,2-ethanediyl]} ; 2,3,3,3-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)propanoyl fluoride