4-碘-2,3,5,6-四氟吡啶

2,2,3,3,4,4,5,5,6-nonafluoropyridine

1-H-decafluoropiperidine

ethyl 1-fluoro-2-oxocyclopentane-1-carboxylate

2-(ethoxycarbonyl)-2-(3,3,4,4,5,5,6,6-octafluoro-1-azacyclohex-1-en-2-yl)cyclopentanone