nonafluoro(trifluoromethyl)-cyclopentan nonafluoro(trifluoromethyl)cyclopentane Perfluoro(methylcyclopentane)90% (Trifluoromethyl)nonafluorocyclopentane 1-(Trifluoromethyl)-1,2,2,3,3,4,4,5,5-nonafluorocyclopentane 1,2,2,3,3,4,4,5,5-Nonafluoro-1-(trifluoromethyl)cyclopentane 1β-(Trifluoromethyl)-1,2,2,3,3,4,4,5,5-nonafluorocyclopentane PERFLUORO(METHYLCYCLOPENTANE)