(2-氧代哌啶-1-基)乙酸

1-(4-甲氧基苄基)-哌啶-2-酮

哌啶-2-硫酮

1-(4-甲氧基苄基)-5,6-二氢吡啶-2(1H)-酮

1-propylpiperidin-2-one