(-)-(2R,5S)-5-Chloro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]uracil 145986-13-6 2,4(1H,3H)-Pyrimidinedione, 5-chloro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2R-cis)- AIDS-004774 AIDS004774 Oxathiolan 5ClU-.b.