5'-O-(((2-Decanoylamino-3-phenylpropyloxycarbonyl)amino)sulfonyl)uridine

5'-O-(4, 4'-Dimethoxytrityl)-2'-deoxyinosine

5'-O-(4, 4'-Dimethoxytrityl)thymidine-3'-O-(2, 4-dinitrophenyl) succinate

5'-O-(6-O-Malonylglucopyranosyl)pyridoxine

5'-O-(9-Phenylxanthen-9-yl)-2'-deoxynebularine

5'-O-(Bis(4-methoxyphenyl)benzyl)-2'-deoxyuridine

5'-O-(Bis(4-methoxyphenyl)phenylmethyl)-2'-deoxy-N-(2-methyl-1-oxopropyl)guanosine 3'-(hydrogen butanedioate)

5'-O-(Bis(4-methoxyphenyl)phenylmethyl)-2'-deoxy-N-(2-methyl-1-oxopropyl)guanosine 3'-benzoate

5'-O-(Bis(4-methoxyphenyl)phenylmethyl)-P-(4-chlorophenyl)thymidylyl-(3'.5')-2'-deoxy-N-(2-methyl-1-oxopropyl)guanosine 3'-benzoate

5'-O-(Cellobiosyl)pyridoxine

5'-O-(Fructofuranosyl-2-1-fructofuranosyl)pyridoxine

5'-O-(Glucopyranosyl)pyridoxine

5'-O-(Glucotriosyl)pyridoxine

5'-O-(L-Valyl)-5-fluorouridine hydrochloride

5'-O-(N-(Alanyl)sulfamoyl)adenosine

5'-O-(p, p'-Dimethoxytrityl)thymidine 3'-(hydrogen succinate)

5'-O-(p, p'-Dimethoxytrityl)thymidine 3'-benzoate

5'-O-(Triphenylmethyl)adenosine

5'-O-Acetylribavirin

5'-O-Benzoyl-3'-deoxythymidine