2,6-Piperidinedione, 4-(1,3-dihydro-1-oxo-2H-isoindol-2-yl)- 2-(2,6-Dioxopiperidine-4-yl)phthalimidine 26581-91-9 EM 16 Glutarimide, 3-(-oxo-2-isoindolinyl)-