2-乙酰基-2-氟环己壬

2-氟-2-(氟乙酰基)环己酮

3-苯甲酰基-2-氯吡啶

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

3-cyclohexyl-5,5-difluoro-2,6-dioxohexahydropyrimidin-4-yl acetate