2,4-二甲基-6-羟基嘧啶

(3Z)-3-(乙氧基-羟基-亚甲基)-4-甲基-吡啶-2,6-二酮

6-methyl-2-pyridin-3-yl-1H-pyrimidin-4-one

6-methyl-2-pyrazin-2-yl-1H-pyrimidin-4-one

3-(6-methyl-4-oxo-1H-pyrimidin-2-yl)propanoic acid