Adenosine, P-(2-cyanoethyl)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)guanylyl-(2′→5′)-N-benzoyl-2′-deoxy-2′-fluoro-, 3′-(hydrogen phosphonate)

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-, 3′-(hydrogen phosphonate)

N-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-imidazo[4,5-c]pyridin-6-yl]-2-phenoxyacetamide

N-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-imidazo[4,5-c]pyridin-6-yl]-2-phenoxyacetamide

N-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-4,5-dihydro-4-oxo-1H-imidazo[4,5-c]pyridin-6-yl]-2-phenoxyacetamide

3′,5′-Dideoxy-5′-(ethylsulfonyl)thymidine

3′,5′-Dideoxy-5′-(methylsulfonyl)thymidine

1-[(2R,5S)-5-[(Ethylsulfinyl)methyl]tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(2R,5S)-tetrahydro-5-[(methylsulfinyl)methyl]-2-furanyl]-2,4(1H,3H)-pyrimidinedione

3′-Deoxy-5′-S-ethyl-5′-thiothymidine

3′-Deoxy-5′-S-methyl-5′-thiothymidine

Adenosine, 5′→P′-ester with thiodiphosphoric acid ((HO)2P(O)OP(S)(OH)(SH))

Cytidine, N-benzoyl-5-(benzoyloxy)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-

Cytidine, N-benzoyl-5-(benzoyloxy)-2′-deoxy-

Cytidine, N-benzoyl-5-(benzoyloxy)-2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Cytidine, 2′-deoxy-5-hydroxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Thymidine, 3′-[(S)-hydrogen methylphosphonoselenoate]

Thymidine, 3′-[(R)-hydrogen methylphosphonoselenoate]

Guanosine, 2′-O-methyl-, 3′-[(S)-hydrogen methylphosphonothioate]

Guanosine, 2′-O-methyl-, 3′-[(R)-hydrogen methylphosphonothioate]