Adenosine, 2-(4-hydroxy-1-butynyl)-

2-Ethynyladenosine

Uridine, 2′-O-(tetrahydropyran-2-yl)-, 3′-phosphate

Uridine, 5′-O-(tetrahydropyran-2-yl)-, 3′-phosphate

9H-Purine-6-thiol, 9-D-psicofuranosyl-

Adenosine, 5′-S-methyl-2-(methylthio)-5′-thio-, 2′,3′-diacetate

Adenine, 2,8-dichloro-9-(2-chloro-2-deoxy-α-D-arabinofuranosyl)-, 3′,5′-diacetate

2′-Deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-thymidine

9H-Purine, 9-D-psicofuranosyl-

Guanosine, 2′,3′-O-(p-methoxybenzylidene)-, 5′-formate

3′-Thymidylic acid, tert-butyl ester

Adenosine, 2′,3′-O-(p-methoxybenzylidene)-, 5′-formate

5′-Thymidylic acid, tert-butyl ester

Benzenesulfonic acid, p-[3-(9-β-D-ribofuranosyl-9H-purin-6-yl)-1-triazino]-, 3′-phosphate

5′-Adenosine triphosphate, 2′-nicotinate

Uridine, 3-methyl-4-thio-, 5′-pyrophosphate, α-D-glucopyranosyl ester

Hexanedioic acid, 2-amino-, 6-anhydride with 5′-adenylic acid

Guanosine, 5′-phenylphosphoramidate

Cytidine, N-acetyl-2′,3′-O-cyclopentylidene-

Hexahydro-2,6-dioxo-3-β-D-ribofuranosyl-4-pyrimidinyl