Synonyms: 2-Pentene,1,1,1,2,4,5,5,5-octafluoro-3-[tetrafluoro-1-(trifluoromethyl)ethyl]-4-(trifluoromethyl)-(8CI);1,1,1,2,4,5,5,5-Octafluoro-3-[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]-4-(trifluoromethyl)pent-2-ene;Perfluoro(3-isopropyl-4-methyl-2-pentene);Perfluoro(4-methyl-3-isopropyl-2-pentene); Perfluoro-3-(1-methylethyl)-4-methyl-2-pentene