2-苯基-1-(1-哌嗪基)乙酮

(2-氯乙基)苯

tert-butyl 4-(2-phenylethyl)piperazine-1-carboxylate

4-phenethyl-piperazine-1-carboxylic acid ethyl ester

1-(4-phenethylpiperazin-1-yl)ethan-1-one