135525-66-5 1H-Isoindole-1,3(2H)-dione, 2-(2-(5-ethyl-1,2-dihydro-6-methyl-2-oxo-3-pyridinyl)ethyl)- 2-(2-(5-Ethyl-1,2-dihydro-6-methyl-2-oxo-3-pyridinyl)ethyl)-1H-isoindole-1,3(2H)-dione 5-Ethyl-6-methyl-3-(2-phthalimidoethyl)pyridin-2(1H)-one L 693593 L-693,593