1-[(2R,3aS,5S,7aS)-5-Ethoxyoctahydro-5-oxidofuro[3,2-d][1,2]azaphosphorin-2-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Thymidine, 5′-azido-3′,5′-dideoxy-3′-[[(S)-ethoxyphosphinyl]methyl]-

Thymidine, 5′-azido-3′,5′-dideoxy-3′-[[(R)-ethoxyphosphinyl]methyl]-

Thymidine, 5′-azido-3′,5′-dideoxy-3′-[[(R)-(1,1-diethoxyethyl)ethoxyphosphinyl]methyl]-

Thymidine, 5′-azido-3′-[[(S)-(1,1-diethoxyethyl)ethoxyphosphinyl]methyl]-3′,5′-dideoxy-

Thymidine, [P(R)]-3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-P-ethyl-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-

Thymidine, [P(S)]-3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-P-ethyl-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-

Formamide, N-[9-(5-deoxy-5-fluoro-2,3-O-isopropylidene-β-D-ribofuranosyl)-9H-purin-6-yl]-

5′-Azido-5′-deoxycytidine

Uridine, 5′-amino-5′-deoxy-5-(methylamino)-

Uridine, 5′-azido-5′-deoxy-5-(methylthio)-

Adenosine, 5′-deoxy-5′-(thioureido)-

9H-Purine, 9-(5-azido-5-deoxy-2,3-O-isopropylidene-β-D-ribofuranosyl)-6-(methylthio)-

9H-Purine, 9-(2,3-O-isopropylidene-β-D-ribofuranosyl)-6-(methylthio)-, 5′-p-toluenesulfonate

Adenosine, 5′-azido-5′-deoxy-2′,3′-O-isopropylidene-N-(3-methyl-2-butenyl)-

Adenosine, 2′,3′-O-isopropylidene-N-(3-methyl-2-butenyl)-, 5′-p-toluenesulfonate

Adenosine, 5′-[(aminoiminomethyl)amino]-5′-deoxy-2′,3′-O-(1-methylethylidene)-

Adenosine, 5′-(1-adamantanecarboxamido)-5′-deoxy-2′,3′-O-isopropylidene-

Adenosine, 5′-deoxy-5′-(isopropylideneamino)-, N5′-oxide

Formamide, N-[9-[5-deoxy-2,3-O-isopropylidene-5-(isopropylideneamino)-β-D-ribofuranosyl]-9H-purin-6-yl]-, N5-oxide