tert-butyl 4-acetyloxypiperidine-1-carboxylate

4-fluoro-1-piperidin-4-ylpiperidine,dihydrochloride

2-(4-hydroxypiperidin-1-yl)-1-phenylethanone

N-丁基-4-羟基哌啶

1-环丁基-4-羟基哌啶