2,2-Dimethyl-propionic acid 5-[5-(2-bromo-vinyl)-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl]-2-(8-methyl-2-oxo-4H-2l5-benzo[1,3,2]dioxaphosphinin-2-yloxymethyl)-tetrahydro-furan-3-yl ester AIDS-163083 AIDS163083 cyclo(3-Methylsaligenyl)-5'-O-(E)-5-(2-bromovinyl)-3'-O-pivaloyl-2'-deoxyuridinyl)phosphate (3-Me-cycloSal-3'-O-Piv-BVDUMP)