1-(3-Fluoro-2,3-dideoxy-B-D-erythro-pentofuranosyl)-4-O-methox 2(1H)-Pyrimidinone, 1-(2,3-dideoxy-3-fluoro-.beta.-D-erythro-pentofuranosyl)-4-methoxy- 248959-88-8 3'-F-4-OMeddU AIDS-000445 AIDS000445