N-chloroethanamine

1-Boc-哌嗪

tert-butyl 4-[2-[(2,2,2-trifluoroacetyl)amino]ethyl]piperazine-1-carboxylate

tert-butyl 4-(2-(benzylideneamino)ethyl)piperazine-1-carboxylate

4-[2-(1,3-二氢-1,3二氧代-2H-异吲哚)乙基]-1-哌嗪羧酸-1,1-二甲基乙酯