4,5-Dihydro-5-thioxo-2-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-1,2,4-triazin-3(2H)-one

Adenine, 2-chloro-9-(3,5-O-isopropylidene-β-D-xylofuranosyl)-, 2′-methanesulfonate

3H-Imidazo[4,5-b]pyridine, 3-(2,3-O-isopropylidene-β-D-ribofuranosyl)-

Adenine, 9-D-psicofuranosyl-, 3′,4′-diacetate

Guanosine, 2′,3′-O-cyclopentylidene-

Cytidine, 2′-deoxy-, 5′-phenylphosphoramidate

Adenosine, 2′,3′-O-isopropylidene-, 5′-morpholinophosphonochloridate

5-Hydroxy-1-[2,3,5-tris-O-(phenylmethyl)-α-D-arabinofuranosyl]-1H-imidazole-4-carbonitrile

5-Hydroxy-1-[2,3,5-tris-O-(phenylmethyl)-β-D-arabinofuranosyl]-1H-imidazole-4-carbonitrile

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-methyl-, 3′-(methyl 4-morpholinylphosphonite)

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

Guanosine, 2′-deoxy-, 5′-(2,2-dimethylpropanoate) 3′-(O-methyl carbonothioate)

Cytidine, 2′-deoxy-N-(2,2-dimethyl-1-oxopropyl)-, 5′-(2,2-dimethylpropanoate)

Guanosine, 2′-deoxy-, 5′-(2,2-dimethylpropanoate)

Cytidine, 2′-deoxy-N-(2,2-dimethyl-1-oxopropyl)-, 5′-(2,2-dimethylpropanoate) 3′-(O-methyl carbonothioate)

Guanosine, 2′-deoxy-, 5′-acetate 3′-(O-methyl carbonothioate)

Adenosine, 2′-deoxy-, 5′-acetate 3′-(O-methyl carbonothioate)

Thymidine, 5′-acetate 3′-(O-methyl carbonothioate)

Thymidine, P,2′-dideoxy-P-methyladenylyl-(3′→5′)-P,2′-dideoxy-P-methylcytidylyl-(3′→5′)-P,2′-dideoxy-P-methyladenylyl-(3′→5′)-P,2′-dideoxy-P-methylguanylyl-(3′→5′)-P,2′-dideoxy-P-methyladenylyl-(3′→5′)-P,2′-dideoxy-P-methylcytidylyl-(3′→5′)-P,2′-dideoxy-P-methyladenylyl-(3′→5′)-

Adenosine, N-[(butylamino)(butylimino)methyl]-2′-deoxy-5′-O-(9-phenyl-9H-xanthen-9-yl)-