5′-Adenylic acid, N-(1-oxobutyl)-, 2′-butanoate

5′-Guanylic acid, 2′,3′-O-(1-methylethylidene)-, mono(5-iodo-1H-indol-3-yl) ester

Uridine, 2′,3′,5′-tris(hydrogen sulfate)

3′-Thymidylic acid, mono(4-nitrophenyl) ester, 5′-(hydrogen methylphosphonate)

3′-Thymidylic acid, mono(4-nitrophenyl) ester, 5′-[hydrogen (iodomethyl)phosphonate]

Uracil, 1-(3-amino-3-deoxy-β-D-arabinofuranosyl)-5-bromo-

3′-Thymidylic acid, 5′-O-(triphenylmethyl)-, mono(2,2,2-trichloroethyl) ester

Guanosine, 5,6-dihydrouridylyl-(5′→3′)-N-(tetrahydro-2H-pyran-2-yl)-2′-O-(tetrahydro-2H-pyran-2-yl)-, cyclic ethyl orthoformate

5′-Uridylic acid, 5′→3′-ester with 2-β-D-ribofuranosyl-3(2H)-pyridazinone

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinesulfonic acid

Uridine, 5-bromo-, 2′-(hydrogen phosphonate)

Guanosine, 2′-O-(tetrahydro-2H-pyran-2-yl)cytidylyl-(3′→5′)-2′,3′-O-methoxybenzylidene)-

1,9-Dihydro-9-(5-O-phosphono-β-D-xylofuranosyl)-6H-purin-6-one

Guanosine, 2′-deoxycytidylyl-(3′→5′)-8-(acetyl-9H-fluoren-2-ylamino)-2′-deoxy-

N-[2-(5-O-Acetyl-3-O-phosphono-β-D-ribofuranosyl)-2,3-dihydro-3-oxo-1,2,4-triazin-5-yl]acetamide

Uridylyl-(3′→5′)-β-D-arabino-uridine

Uridine, 2′-deoxy-5-iodo-, 3′,5′-bis(hydrogen sulfate)

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(4-chlorophenyl)thymidylyl-(3′→5′)-6-O-benzoyl-P-(4-chlorophenyl)-2′-deoxyguanylyl-(3′→5′)-3-benzoyl-P-(4-chlorophenyl)thymidylyl-(3′→5′)-N-benzoyl-2′-deoxy-, 3′-acetate

Adenosine, 3-benzoyl-P-(4-chlorophenyl)thymidylyl-(3′→5′)-N-benzoyl-2′-deoxy-, 3′-acetate

3′-Guanylic acid, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(4-chlorophenyl)thymidylyl-(3′→5′)-N-benzoyl-2′-deoxy-6-O-methyl-, 4-chlorophenyl 2-cyanoethyl ester