methyl N-(((2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl)-P-(((2S,3S,5R)-2-(hydroxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl)methyl)-N-methylphosphonamidate

3'-deoxy-3'-C-[[(2-cyanoethoxy)phosphinyl]methyl]-5'-O-(4-methoxytrityl)thymidine

[(2S,3S,5R)-2-Azidomethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-ylmethyl]-phosphinic acid ethyl ester