乙酰丙酮

6-[2-(3,4-dimethoxyphenyl)ethenyl]-4-methoxypyran-2-one

3-bromo-4-hydroxy-6-methylpyran-2-one

3-hexanoyl-4-hydroxy-6-methylpyran-2-one

5,6-二氢-4-羟基-6-甲基-2H-吡喃-2-酮