葫芦巴碱

1-甲基-4-氧代哌啶-3-羧酸乙酯

N,N-二-(beta-羰基乙氧基乙基)甲胺

3-cyano-1-methyl-1,2,5,6-tetrahydropyridine

1-甲基-4-哌啶酮-3-羧酸甲酯