5′-Adenylic acid, N-[2-[2-[2-[(iodoacetyl)amino]ethoxy]ethoxy]ethyl]-

3′-Uridylic acid, 2′-deoxy-5-fluoro-, mono(4-nitrophenyl) ester, 5′-(4-nitrophenyl hydrogen phosphate)

(2R,3R,3aS,9aR)-3-(Acetyloxy)-7-(dimethylamino)-2,3,3a,9a-tetrahydro-6-imino-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidine-2-methanol

(2R,3R,3aS,9aR)-2,3,3a,9a-Tetrahydro-2-(hydroxymethyl)-6-imino-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl docosanoate

5′-Guanylic acid, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

5′-Adenylic acid, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, 5′-O-[bis(2,2,2-trichloroethoxy)phosphinyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-(2,2,2-trichloroethyladenylyl-(2′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-(2,2,2-trichloroethyl)adenylyl-(2′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl])-

5′-Cytidylic acid, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-, bis(2,2,2-trichloroethyl) ester

5′-Guanylic acid, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-, bis(2,2,2-trichloroethyl) ester

5′-Adenylic acid, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-, bis(2,2,2-trichloroethyl) ester

3′-Thymidylic acid, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-P-[2-(phenylthio)ethyl]thymidylyl-(3′→5′)-, 2-cyanoethyl 2-(phenylthio)ethyl ester

3′-Thymidylic acid, 2-cyanoethyl 2-(phenylthio)ethyl ester

3′-Thymidylic acid, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 2-cyanoethyl 2-(phenylthio)ethyl ester

3′-Thymidylic acid, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-, cyclic 1,2-ethanediyl ester

3′-Thymidylic acid, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-, mono[2-(phenylthio)ethyl] ester

Acetic acid, (2,5-dioxo-1-β-D-ribofuranosyl-4-imidazolidinylidene)-, methyl ester

Methyl hexahydro-2,6-dioxo-1-β-D-ribofuranosyl-4-pyrimidinecarboxylate

Thymidine 5′-(trihydrogen diphosphate), P,P′-bis(4-chlorophenyl) ester, 3′-acetate, ester with thymidine 3′-acetate

Adenosine, 5′-O-[bis(2,2,2-trichloroethoxy)phosphinyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-(2,2,2-trichloroethyl)adenylyl-(2′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

5′-Guanylic acid, 2′,3′-O-(1-methylethylidene)-, bis(2,2,2-trichloroethyl) ester