3TC & TSAO-m^3T & MKC-442 6-Benzyl-1-(ethoxymethyl)-5-isopropyluracil AIDS-080907 AIDS080907 cis-1-[2'-Hydroxymethyl-5'-(1,3-oxathiolanyl)]cytosine & Thymidine, 3-methyl, [2',5'-bis-O-(tert-butyldimethylsilyl)-.beta.-D-ribofuranosyl]-3'-spiro-5-(4-amino-1,2-oxathiole-2,2-dioxide) & 2,4(1H,3H)-Pyrimidinedione, 1-(ethoxymethyl)-5-(1-methylethyl)-6-(phenylmethyl)-