| 5-methyl-2(5h)-furanon |
| 4-hydroxy-2-pentanoic aci gamma-lactone |
| 4-hydroxy-2-pentenoic acid gamma-lactone |
| 5-methyl-2(5h)-furanone |
| alpha,beta-angelica lactone |
| beta-angelica lactone |
| delta(sup 1)-angelica lactone |
| gamma-methyl-alpha,beta-crotonolactone |
| 5-methylfuran-2(5h)-one |
| 5-Methyl-25H-furanone |
