(-)-(2S,5S)-5-Chloro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]cystosine 149819-52-3 2(1H)-Pyrimidinone, 4-amino-5-chloro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2S-trans)- AIDS-005683 AIDS005683 Oxathiolan, 5ClC-(-).a.