Adenosine, guanylyl-(3′→4′)-8,9-didehydro-9-de-β-D-ribofuranosyl-7,8-dihydro-9-[[(3R,4R)-3-hydroxy-4-(hydroxymethyl)-1-pyrrolidinyl]methyl]-8-aza-9-deazaadenylyl-(3′→5′)-guanylyl-(3′→5′)-

Pyridinium, 3-(aminocarbonyl)-1-[5-O-[hydroxy(phosphonooxy)phosphinyl]-β-D-ribofuranosyl]-, inner salt, P′→5′-ester with 9-β-D-xylofuranosyl-9H-purin-6-amine

Cytidine, 2′-deoxyinosinylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyinosinylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Adenosine, thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Cytidine, 2′-deoxy-2′,2′-difluoro-3′,5′-O-(1,1,3,3-tetraphenyl-1,3-disiloxanediyl)-

Cytidine, 2′-deoxy-2′,2′-difluoro-3′,5′-O-[1,1,3,3-tetrakis(1,1-dimethylethyl)-1,3-disiloxanediyl]-

Cytidine, 2′-deoxy-2′,2′-difluoro-3′,5′-O-(1,1,3,3-tetraethyl-1,3-disiloxanediyl)-

Cytidine, 2′-deoxy-2′,2′-difluoro-3′,5′-O-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)-

Cytidine, 2′-deoxy-3′,5′-O-(diphenylsilylene)-2′,2′-difluoro-

Cytidine, 3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′,2′-difluoro-

Cytidine, 2′-deoxy-3′,5′-O-(diethylsilylene)-2′,2′-difluoro-

Cytidine, 2′-deoxy-3′,5′-O-(dimethylsilylene)-2′,2′-difluoro-

Guanosine, N-(2-methyl-1-oxopropyl)-2′-O-[(2-nitrophenyl)methyl]-, 3′-(4-chlorophenyl phenylphosphoramidate)

Cytidine, N-benzoyl-2′-O-[(2-nitrophenyl)methyl]-, 3′-(4-chlorophenyl phenylphosphoramidate)

Uridine, 2′-O-[(2-nitrophenyl)methyl]-, 3′-(4-chlorophenyl phenylphosphoramidate)

1-[3-O-[(2-Cyanoethoxy)hydroxyphosphinyl]-2-deoxy-β-D-erythro-pentofuranosyl]-6,7-dimethyl-2,4(1H,3H)-pteridinedione

Guanosine 2′-(trihydrogen diphosphate), 5′-(dihydrogen phosphate)

[[5,6-Dihydro-2-methyl-5-oxo-6-[2,3,5-tris-O-(trimethylsilyl)-β-D-ribofuranosyl]imidazo[1,2-c]pyrimidin-3-yl]methyl]triphenylphosphonium

Imidazo[2,1-i]purin-6-ium, 7-ethyl-3,9-dihydro-3-β-D-ribofuranosyl-

Urea, N-butyl-N′-(2-chloroethyl)-N′-nitroso-N-D-ribofuranosyl-