2-piperidin-4-ylideneacetic acid,hydrochloride

4-羟基-3,4,5,6-四氢-2H-[2,4]联吡啶-1-羧酸叔丁酯

3,6-二氢-2H-[2,4]联吡啶-1-羧酸叔丁基酯

1-(4-甲氧基苯甲酰基)哌啶-4-酮

2,3,4,5-四氢-1H-吡啶并[4,3-b]吲哚-8-羧酸