| 2-(tetrahydro-2-oxo-3-furanyl)-1h-isoindole-3(2h)-dione |
| 2-(tetrahydro-2-oxo-3-furanyl)-1h-isoindole-1,3(2h)-dione |
| alpha-2-hydroxyethyl-1,3-dioxo-2-isoindolineacetic aci gamma-lactone |
| 2-phthalimidobutyrolactone |
| 2-(tetrahydro-2-oxo-3-furanyl)-1h-isoindole-3(2h)-dione |
