1H-Isoindole-1,3(2H)-dione, 2-(2-(acetyloxy)ethyl)- 2-(1,3(2H)-Dioxo-1H-isoindol-2-yl)ethyl acetate 5466-90-0 AI3-09470 EINECS 226-777-8 N-(beta-Acetoxyethyl)phthalimide NSC 28603