benzyl 1,4,6,7-tetrahydropyrazolo[4,3-c]pyridine-5-carboxylate

苄基4-羟基-4-(2-吡啶基)-1-哌啶羧酸酯

4-氧代-3,4-二氢吡啶-1(2H)-羧酸苄酯

4-哌啶酮缩乙二醇

4-(三甲基硅基氧基)-5,6-二氢吡啶-1(2H)-甲酸苄酯