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]-