rac-4-(4-fluorophenyl)-1-oxo-2,8-diazaspiro[4.5]decane-8-carboxylic acid tert-butyl ester

rac-4-(4-fluoro-phenyl)-2,8-diaza-spiro[4.5]decan-1-one hydrochloride

rac-4-[1-(4-fluorophenyl)-2-nitroethyl]piperidine-1,4-dicarboxylic acid 1-tert-butyl ester 4-ethyl ester

4-哌啶甲酸乙酯

N-Boc-4-哌啶甲酸乙酯