5'-{O-phenyl-N-[(1S)-2-oxo-2-methoxy-1-methylethyl]phosphoramidate}

thymidine-5'-β-alaninyl phosphoramidate

3'-thiothymidylyl(3'-5')thymidine

thymidine 5'-[3-acetyloxy-2,2-bis(ethoxycarbonyl)propyl]phosphate

thymidine 5'-[3-acetyloxymethoxy-2,2-bis(ethoxycarbonyl)]propylphosphate