Adenosine, thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Adenosine, 5′-O-phosphonothymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Adenosine, 2′-deoxy-5′-O-trityl-, 3′-acetate

Adenosine, 2′-deoxy-5′-O-trityl-, 3′-p-toluenesulfonate

Thymidine, 5′-O-trityl-, 3′-[bis(cyclopropylmethyl) phosphate]

N-Acetyl-2′,5′-bis-O-(triphenylmethyl)cytidine

Uridine, 5′-chloro-5′-deoxy-5-fluoro-, cyclic 2′,3′-sulfite, (R)-

Uridine, 2′,3′-O-isopropylidene-, 5′-[bis(cyclopropylmethyl) phosphate]

2,5-Methano-5H,9H-pyrimido[2,1-b][1,5,3]dioxazepine-3-methanol, 2,3-dihydro-11-hydroxy-9-imino-, [2R-(2α,3β,5α,11R*)]-

Uridine, 5′-chloro-5′-deoxy-5-fluoro-, cyclic 2′,3′-sulfite, (S)-

Uridine, 5′-chloro-5′-deoxy-, cyclic 2′,3′-sulfite, (S)-

7-β-D-Glucofuranosyl-1,7-dihydro-6H-purine-6-thione

1,7-Dihydro-7-(2,3,5,6-tetra-O-acetyl-β-D-glucofuranosyl)-6H-purine-6-thione

9-β-D-Glucofuranosyl-N-(phenylmethyl)-9H-purin-6-amine

6-Chloro-9-β-D-glucofuranosyl-9H-purine

6-Chloro-9-(2,3,5,6-tetra-O-acetyl-β-D-glucofuranosyl)-9H-purine

Cytidine 5′-(tetrahydrogen triphosphate), 2′-deoxy-5-[4-[(trifluoroacetyl)amino]-1-butynyl]-, 3′-acetate

Cytidine 5′-(tetrahydrogen triphosphate), 2′-deoxy-5-[4-[(1,1-dimethylethyl)dithio]-1-butynyl]-, 3′-acetate

Cytidine, 2′-deoxy-5-[4-[(trifluoroacetyl)amino]-1-butynyl]-, 3′-acetate

Cytidine, 2′-deoxy-5-[4-[(1,1-dimethylethyl)dithio]-1-butynyl]-, 3′-acetate