Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-4-O-[2-(4-nitrophenyl)ethyl]-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-6-O-methyl-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-6-O-(1-methylethyl)-N-(2-methyl-1-oxopropyl)-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-

Guanosine, 2′-deoxy-6-O-methyl-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-

Guanosine, 2′-deoxy-6-O-methyl-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 3′,5′-diacetate

Guanosine, 2′-deoxy-1-methyl-, 3′,5′-diacetate

Guanosine, 2′-deoxy-6-O-methyl-, 3′,5′-diacetate

Guanosine, 2′-deoxy-6-O-(1-methylethyl)-N-(2-methyl-1-oxopropyl)-

Guanosine, 2′-deoxy-6-O-(1-methylethyl)-N-(2-methyl-1-oxopropyl)-, 3′,5′-bis(2-methylpropanoate)

Guanosine, 2′-deoxy-6-O-ethyl-N-(2-methyl-1-oxopropyl)-, 3′,5′-bis(2-methylpropanoate)

Guanosine, 2′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-(phenyl carbonate)

Thymidine, 5′-(4-chlorophenyl carbonate)

Thymidine, 5′-[4-(phenylazo)phenyl carbonate]

Thymidine, 5′-(2-nitrophenyl carbonate)

Thymidine, 5′-(2,2,2-trichloro-1,1-dimethylethyl carbonate)

5′-Cytidylic acid, monoanhydride with [4-[[2-(methylamino)benzoyl]amino]butyl]phosphoramidic acid

Guanosine, N-[(dimethylamino)methylene]-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3′-thio-, 2′-acetate 3′-benzoate