5-羟基-2-(羟基甲基)-1-甲基-4(1H)-吡啶酮

6-(羟基甲基)吡啶-3,4-二醇

(2-氯甲基)-5-羟基-4H-吡喃-4-酮

2-(aminomethyl)-6-methyl-3-phenylmethoxypyran-4-one

3-hydroxy-6-(hydroxymethyl)-2-(piperidin-1-ylmethyl)pyran-4-one