Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-2′-deoxy-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-thiothymidylyl-(3′→5′)-, 3′-(hydrogen butanedioate)

Adenosine, 5′-O-(thiophosphoryl)thymidylyl-(3′→5′)-2′-deoxy-cytidylyl-(3′→5′)-2′-deoxy-, S-ethyl ester

Uridine, cyclic 2′,3′-(hydrogen phosphorodithioate)

Uridine, P,P-dithiouridylyl-(2′→5′)-

N-[1-[5-O-[2-[(2,3-Dihydroxy-5-nitrobenzoyl)amino]ethyl]-β-D-ribofuranosyl]-1,6-dihydro-6-oxo-4-pyrimidinyl]benzamide

N-[1-[2,3-Di-O-acetyl-5-O-[2-[(2,3-dihydroxy-5-nitrobenzoyl)amino]ethyl]-β-D-ribofuranosyl]-1,6-dihydro-6-oxo-4-pyrimidinyl]benzamide

Cytidine, N-benzoyl-5′-O-[2-[(2,3-dihydroxy-5-nitrobenzoyl)amino]ethyl]-, 2′,3′-diacetate

Adenosine, N-benzoyl-5′-O-[2-[(2,3-dihydroxy-5-nitrobenzoyl)amino]ethyl]-, 2′,3′-diacetate

N-[1-[2,3-Di-O-acetyl-5-O-[2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]ethyl]-β-D-ribofuranosyl]-1,6-dihydro-6-oxo-4-pyrimidinyl]benzamide

Cytidine, N-benzoyl-5′-O-[2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]ethyl]-, 2′,3′-diacetate

Adenosine, N-benzoyl-5′-O-[2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]ethyl]-, 2′,3′-diacetate

6-Amino-3-[5-O-[2-[(2,3-dihydroxy-5-nitrobenzoyl)amino]ethyl]-β-D-ribofuranosyl]-4(3H)-pyrimidinone

Cytidine, 5′-O-[2-[(2,3-dihydroxy-5-nitrobenzoyl)amino]ethyl]-