2,4(1H,3H)-Pyrimidinedione, 3-(1,3-dihydro-3-oxo-1-isobenzofuranyl)-5-fluoro- 3-(1,3-Dihydro-3-oxo-1-isobenzofuranyl)-5-fluoro-2,4(1H,3H)-pyrimidinedione 3-Pfu 5-Fluoro-3-phthalidyl-uracil 82023-29-8 BRN 5586734 N(sub 3)-Phthalidyl-5-fluorouracil Uracil, 5-fluoro-3-phthalidyl-