2,3-双(三氟甲基)吡唑并[1,5-a]吡啶

2H-九氟丁烷

1,1,2,2,3,3,4-heptafluoro-4-(2,3,3,4,4-pentafluorocyclobuten-1-yl)cyclobutane

1,1,2,2,3,3-hexafluoro-4-(2,2,3,3,4,4-hexafluorocyclobutylidene)cyclobutane

perfluoro-(1-methylpropylidene)cyclobutane