4-hydroxy-6-methyl-3-prop-2-enylpyran-2-one

6-methyl-4-sulfanylpyran-2-one

4-hydroxy-3-[(4-hydroxy-6-methyl-2-oxopyran-3-yl)methyl]-6-methylpyran-2-one

4-methoxy-6-[2-(3,4,5-trimethoxyphenyl)ethyl]pyran-2-one

4-羟基-1,6-二甲基-2(1H)-吡啶酮