Cytidine, P-(4-chlorophenyl)-2′-O-(2-nitrophenyl)-N-(phenylmethyl)cytidylyl-(3′→5′)-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

Cytidine, P-(4-chlorophenyl)-N-(2-methyl-1-oxopropyl)-2′-O-(2-nitrophenyl)guanylyl-(3′→5′)-P-(4-chlorophenyl)-N-(2-methyl-1-oxopropyl)-2′-O-(2-nitrophenyl)guanylyl-(3′→5′)-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

Cytidine, P-(4-chlorophenyl)-5′-O-[(4-methoxyphenyl)diphenylmethyl]-2′-O-(2-nitrophenyl)-N-(phenylmethyl)cytidylyl-(3′→5′)-P-(4-chlorophenyl)-N-(2-methyl-1-oxopropyl)-2′-O-(2-nitrophenyl)guanylyl-(3′→5′)-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

Cytidine, P-(4-chlorophenyl)-N-(2-methyl-1-oxopropyl)-2′-O-(2-nitrophenyl)guanylyl-(3′→5′)-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

Cytidine, 2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

3′-Guanylic acid, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, mono(4-chlorophenyl) ester

Adenosine, P-(4-chlorophenyl)-5′-O-[(4-methoxyphenyl)diphenylmethyl]-2′-O-(2-nitrophenyl)-N-(phenylmethyl)adenylyl-(3′→5′)-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

Adenosine, 2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, 3′-(4-chlorophenyl phenylphosphoramidate)

3′-Adenylic acid, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-2′-O-(2-nitrophenyl)-N-(phenylmethyl)-, mono(4-chlorophenyl) ester

Adenosine, 8-bromo-5′-deoxy-2′,3′-O-(1-methylethylidene)-

Adenosine, 5′-deoxy-8-methoxy-

Adenosine, 5′-deoxy-2′,3′-O-(1-methylethylidene)-8-(phenylthio)-

Adenosine, 8-cyano-, 3′,5′-diacetate 2′-(4-methylbenzenesulfonate)

Adenosine, 8-(aminocarbonyl)-, 2′-(4-methylbenzenesulfonate)

Adenosine, 8-cyano-, 5′-acetate 2′-(4-methylbenzenesulfonate)

Adenosine, 8-[(4-methylphenyl)sulfonyl]-, 3′,5′-diacetate 2′-(4-methylbenzenesulfonate)

Adenosine, 8-[(4-methylphenyl)thio]-, 3′,5′-diacetate 2′-(4-methylbenzenesulfonate)

Adenosine, 8-[(4-methylphenyl)thio]-, 2′-(4-methylbenzenesulfonate)

Guanosine, 6-O-[(1,1-dimethylethyl)diphenylsilyl]-N-(triphenylmethyl)-, 2′,3′,5′-triacetate

Guanosine, 6-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(triphenylmethyl)-, 2′,3′,5′-triacetate