1,1,3,3-tetrafluoro-4-methyl-2-(trifluoromethyl)pent-1-ene

1,1,1,3-tetrafluoro-4-methyl-2-(trifluoromethyl)pent-2-ene

1,1,1,3-tetrafluoro-2-(trifluoromethyl)hept-3-ene

3,5,5,5-tetrafluoro-2-methyl-4-(trifluoromethyl)pent-2-ene

1,1-diethoxy-3,5,5,5-tetrafluoro-4-(trifluoromethyl)penta-1,3-diene