N-cyclopentyl-N'-(4-nitrophenyl)picolinimidamide

5-amino-1-cyclopentylimidazole-4-carboxamide

6-chloro-9-cyclopentylpurine

6-氯-N4-环戊基嘧啶-4,5-二胺

ethyl N-cyclopentylcarbamate