Cytidine, 2′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 5′-(2-chloro-6-nitrobenzeneethanesulfonate)

Cytidine, 2′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 5′-(2-nitrobenzeneethanesulfonate)

Thymidine, 5′-(2,4-dinitrobenzeneethanesulfonate)

Thymidine, 5′-(4-chloro-2-nitrobenzeneethanesulfonate)

Thymidine, 5′-(2-chloro-6-nitrobenzeneethanesulfonate)

Thymidine, 5′-(2-nitrobenzeneethanesulfonate)

Thymidine, 5′-O-[[1-(2,2-dimethyl-6-nitro-1,3-benzodioxol-5-yl)ethoxy]carbonyl]thymidylyl-(3′→5′)-, 3′-acetate

Thymidine, 5′-O-[[2-(2-nitrophenyl)propoxy]carbonyl]thymidylyl-(3′→5′)-, 3′-acetate

Thymidine, P-(2-cyanoethyl)-5′-O-[[1-(2,2-dimethyl-6-nitro-1,3-benzodioxol-5-yl)ethoxy]carbonyl]thymidylyl-(3′→5′)-, 3′-acetate

Thymidine, P-(2-cyanoethyl)-5′-O-[[2-(2-nitrophenyl)propoxy]carbonyl]thymidylyl-(3′→5′)-, 3′-acetate

Thymidine, 5′-[1-(2,2-dimethyl-6-nitro-1,3-benzodioxol-5-yl)ethyl carbonate]

Thymidine, 5′-[2-methoxy-2-(2-nitrophenyl)ethyl carbonate]

Thymidine, 5′-[2-chloro-2-(2-nitrophenyl)ethyl carbonate]

Thymidine, 5′-[2-(4-cyano-2-nitrophenyl)ethyl carbonate]

2,4(1H,3H)-Pyrimidinedione, 5-methyl-1-[2,3,5-trideoxy-5-(diethoxyphosphinyl)-5,5-di-C-fluoro-3-[(4-methylphenyl)sulfonyl]-L-erythro-pentofuranosyl]-

2,4(1H,3H)-Pyrimidinedione, 5-methyl-1-[2,3,5-trideoxy-5-(diethoxyphosphinyl)-5,5-di-C-fluoro-3-[(4-methylphenyl)sulfonyl]-α-D-erythro-pentofuranosyl]-

Thymidine, 3′,5′-dideoxy-5′-(diethoxyphosphinyl)-5′,5′-di-C-fluoro-3′-[(4-methylphenyl)sulfonyl]-

Adenosine, N-(1-oxobutyl)-, cyclic 3′,5′-[hydrogen (R)-phosphorothioate]

Adenosine, 8-bromo-N-(1-oxobutyl)-, cyclic 3′,5′-[hydrogen (R)-phosphorothioate]

Thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanosine