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

7-[5-O-[[[(1S)-2-Methoxy-2-oxo-1-(phenylmethyl)ethyl]amino](phenylmethoxy)phosphinyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-imidazo[4,5-c]pyridazin-4-amine

Adenosine 5′-(tetrahydrogen triphosphate), P′′,P′′-bis(phenylmethyl) ester

Thymidine 5′-(trihydrogen diphosphate), P′→5′-ester with thymidine 3′-acetate

2′-Adenylic acid, 3′,5′-O-(phenylmethylene)-, bis(phenylmethyl) ester

Thymidine, 5′-O-acetyl-5-methyluridylyl-(3′→5′)-, 3′-acetate

Thymidine, 5′-O-[bis(4-methoxyphenyl)methyl]-, 3′-(methyl 1-pyrrolidinylphosphonite)

Thymidine, P-(2,2,2-trichloroethyl)thymidylyl-(3′→5′)-

Adenosine 5′-(trihydrogen diphosphate), 2′,3′-dideoxy-, P′-[3-hydroxy-4-[[3-[(2-mercaptoethyl)amino]-3-oxopropyl]amino]-2,2-dimethyl-4-oxobutyl] ester

N-[1-(2,5-Di-O-benzoyl-β-D-xylofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

Cytidine, N-(trimethylsilyl)-2′,3′,5′-tris-O-(trimethylsilyl)-

3-(2-O-Methyl-β-D-ribofuranosyl)-2,4(1H,3H)-pyrimidinedione

Cytidine, 6-iodo-

3′-Adenylic acid, 2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Cytidine, 5-bromo-2′-deoxy-N-(trimethylsilyl)-3′,5′-bis-O-(trimethylsilyl)-

6-Amino-3-β-D-arabinofuranosyl-2,3-dihydro-2-oxo-4-pyrimidinecarboxylic acid

6-Amino-3-(2-deoxy-β-D-erythro-pentofuranosyl)-2,3-dihydro-2-oxo-4-pyrimidinecarboxylic acid

6-Amino-2,3-dihydro-2-oxo-3-β-D-ribofuranosyl-4-pyrimidinecarboxylic acid

4-Amino-1-[2,3,5-tris-O-(trimethylsilyl)-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

Cytidine, 2′-deoxy-3′,5′-bis-O-(trimethylsilyl)-