Guanosine, P-(2-cyanoethyl)-5′-deoxy-N-[(dimethylamino)methylene]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-[(1,1-dimethylethyl)dithio]guanylyl-(3′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-phenoxyacetyl)-

Guanosine, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-phenoxyacetyl)-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-phenoxyacetyl)-

2′-Deoxy-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]cytidylyl-(3′→5′)-5′-thioguanylyl-(3′→5′)-guanosine

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-N-[2-[4-(1-methylethyl)phenoxy]acetyl]-, 2′-acetate 3′-(hydrogen butanedioate)

Guanosine, 2′-deoxy-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]cytidylyl-(3′→5′)-5′-thio-

Guanosine, 5′-deoxy-N-[(dimethylamino)methylene]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-[(1,1-dimethylethyl)dithio]-

Guanosine, 5′-deoxy-N-[(dimethylamino)methylene]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-[(5-nitro-2-pyridinyl)dithio]-

Guanosine, 5′-deoxy-N-[(dimethylamino)methylene]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-(2-pyridinyldithio)-

Guanosine, 5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-[(5-nitro-2-pyridinyl)dithio]-

Guanosine, 5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-(2-pyridinyldithio)-

Guanosine, 5′-thio-, 5′-acetate

Guanosine, 2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-thio-, 5′-acetate

Guanosine, 5′-deoxy-N-[(dimethylamino)methylene]-2′,3′-O-(1-methylethylidene)-5′-[(5-nitro-2-pyridinyl)dithio]-

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]-, 3′-(hydrogen phosphonate)

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]-

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-[[[(4,5-dimethoxy-2-nitrophenyl)methoxy]carbonyl]amino]-