(+)-(2R,5R)-5-Fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]uracil 145986-12-5 2,4(1H,3H)-Pyrimidinedione, 5-fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2R-trans)- AIDS-004773 AIDS004773 Oxathiolan 5FU-.a.