2-(hydroxymethyl)-1-methyl-5-phenylmethoxypyridin-4-one

5-(苄氧基)-2-(氯甲基)-4H-吡喃-4-酮

(5-hydroxy-4-oxopyran-2-yl)methyl 2-chloroacetate

罌粟酸

2-methyl-5-phenylmethoxy-1-(2-piperidin-1-ylethyl)pyridin-4-one