Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 5′-(hydrogen butanedioate), 3′-(1,1-dimethylethyl carbonate), 5′-ester with 2′-deoxy-2′,2′-difluoro-N-[(phenylmethoxy)carbonyl]cytidine 3′-(1,1-dimethylethyl carbonate)

Cytidine, 2′-deoxy-2′,2′-difluoro-N-[(phenylmethoxy)carbonyl]-, 5′,5′′′-pentanedioate

Cytidine, 2′-deoxy-2′,2′-difluoro-N-[(phenylmethoxy)carbonyl]-, 5′,5′′′-pentanedioate, 3′,3′′′-bis(1,1-dimethylethyl carbonate)

Cytidine, 2′-deoxy-2′,2′-difluoro-N-[(phenylmethoxy)carbonyl]-, 3′-(1,1-dimethylethyl carbonate) 5′-(hydrogen pentanedioate)

Cytidine, 2′-deoxy-2′,2′-difluoro-N-[(phenylmethoxy)carbonyl]-, 3′-(1,1-dimethylethyl carbonate)

2′-Deoxy-2′,2′-difluoro-N-[(phenylmethoxy)carbonyl]-3′,5′-bis-O-(trimethylsilyl)cytidine

Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 5′,5′′′-butanedioate, 3′,3′′′-bis(1,1-dimethylethyl carbonate)

Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 3′-(1,1-dimethylethyl carbonate) 5′-(hydrogen pentanedioate)

N-(Butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-3′,5′-bis-O-(trimethylsilyl)cytidine

Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 5′,5′′′-butanedioate

Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 3′-(butyl carbonate) 5′-(hydrogen pentanedioate)

Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 3′-(butyl carbonate)

Cytidine, N-(butoxycarbonyl)-2′-deoxy-5′-[(1,1-dimethylethyl)dimethylsilyl]-2′,2′-difluoro-, 3′-(butyl carbonate)

Cytidine, N-(butoxycarbonyl)-2′-deoxy-2′,2′-difluoro-, 5′,5′′′-pentanedioate, 3′,3′′′-bis(butyl carbonate)

Adenylyl-(3′→5′)-uridylyl-(3′→5′)-guanylyl-(3′→5′)-adenylyl-(3′→5′)-cytidylyl-(3′→5′)-adenosine

Adenylyl-(3′→5′)-adenylyl-(3′→5′)-uridylyl-(3′→5′)-guanylyl-(3′→5′)-cytidylyl-(3′→5′)-uridine

N-[9-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-arabinofuranosyl]-9H-purin-6-yl]benzamide

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

N-[9-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-β-D-arabinofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]benzamide

N-[9-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-2-fluoro-β-D-arabinofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]benzamide