3-乙基-4-甲基呋喃-2,5-二酮

3,4-二甲基-2,5-二氢呋喃-2-酮

5-hydroxy-3,4,5-trimethylfuran-2-one

3,4,5,5-tetramethyl-2(5H)-furanone

3-methyl-4-methylideneoxolane-2,5-dione