1-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-methylpyridin-1-ium-3,4-diol,chloride

1,2-dimethyl-3-phenylmethoxypyridin-4-one

1-benzyl-3-ethenyl-2-methylpyridin-4-one

3-甲氧基-2-甲基-4H-吡喃-4-酮

3-hydroxy-2-methyl-1-phenylpyridin-4-one