Guanosine, 5′-O-[hydroxy(4-nitrophenoxy)phosphinyl]adenylyl-(3′→5′)-uridylyl-(3′→5′)-

Guanosine, cyclic 3′,5′-phosphonate

N-[1-(3,5-Di-O-acetyl-2-chloro-2-deoxy-β-D-arabinofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl]acetamide

N-[1-(3,5-Di-O-acetyl-2-chloro-2-deoxy-α-D-arabinofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl]acetamide

N-Cyclopropyl-1-deoxy-1-(1,6-dihydro-6-oxo-9H-purin-9-yl)-β-D-ribofuranuronamide

1-Deoxy-1-(1,6-dihydro-6-oxo-9H-purin-9-yl)-N-ethyl-β-D-ribofuranuronamide

β-D-Ribofuranuronic acid, 1-deoxy-1-(1,6-dihydro-6-oxo-9H-purin-9-yl)-, 2-chloroethyl ester

Cytidine, N-benzoyl-5′-O-[bis(phenylamino)phosphinyl]-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-N-(4-methoxybenzoyl)-

Thymidine, 5′-O-[bis(phenylamino)phosphinyl]thymidylyl-(3′→5′)-

Adenosine, N-benzoyl-5′-O-[bis(phenylamino)phosphinyl]-2′-deoxyadenylyl-(3′→5′)-N-benzoyl-2′-deoxy-

Cytidine, 5′-S-methyl-5′-thio-

Cytidine, 5′-S-(phenylmethyl)-5′-thio-

5′-Deoxycytidine

Uridine, P-(2,5-dichlorophenyl)-2′,5′-bis-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)uridylyl-(3′→5′)-2′-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)-3′-O-(tetrahydro-2H-pyran-2-yl)-

Uridine, P-(2,4-dichlorophenyl)-2′,5′-bis-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)uridylyl-(3′→5′)-2′-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)-3′-O-(tetrahydro-2H-pyran-2-yl)-

Uridine, P-(3,5-dichlorophenyl)-2′,5′-bis-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)uridylyl-(3′→5′)-2′-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)-3′-O-(tetrahydro-2H-pyran-2-yl)-

Uridine, P-(2-chlorophenyl)-2′,5′-bis-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)uridylyl-(3′→5′)-2′-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)-3′-O-(tetrahydro-2H-pyran-2-yl)-

Uridine, P-(2-fluorophenyl)-2′,5′-bis-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)uridylyl-(3′→5′)-2′-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)-3′-O-(tetrahydro-2H-pyran-2-yl)-

Uridine, P-phenyl-2′,5′-bis-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)uridylyl-(3′→5′)-2′-O-(tetrahydro-2-methoxy-2H-pyran-2-yl)-3′-O-(tetrahydro-2H-pyran-2-yl)-

Thymidine, 5′-O-(triphenylmethyl)-, 3′-(dihydrogen phosphorothioate)