(2R,3S,5R)-2-(hydroxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl phosphorodiamidate

(2R,3S,5R)-2-(((diaminophosphoryl)oxy)methyl)-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl phosphorodiamidate

1-[5-(diaminophosphoryloxymethyl)-4-hydroxyoxolan-2-yl]-5-methylpyrimidine-2,4-dione

[3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl carbamate

[3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl phenyl carbonate