(-)-(2R,5S)-1-[2-(Hydroxymethyl)-1,3-oxathiolan-5-yl]uracil 145986-07-8 2,4(1H,3H)-Pyrimidinedione, 1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2R-cis)- 2-OHMe-1,3-OxathiolanU AIDS-004768 AIDS004768