(+)-(2S,5R)-5-Fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]uracil 145281-92-1 2,4(1H,3H)-Pyrimidinedione, 5-fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2S-cis)- AIDS-005670 AIDS005670 Oxathiolan, 5FU-(+).b.