5-(2,3,5-Tri-O-benzoyl-β-D-ribofuranosyl)-5H-imidazo[1,2-b]pyrazole-7-carbonitrile

6-(Methylsulfonyl)-1-β-D-ribofuranosyl-1H-imidazo[1,2-b]pyrazole-7-carbonitrile

6-(Methylthio)-1-β-D-ribofuranosyl-1H-imidazo[1,2-b]pyrazole-7-carbonitrile

1-β-D-Ribofuranosyl-1H-imidazo[1,2-b]pyrazole-7-carbonitrile

1-(2,3,5-Tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazo[1,2-b]pyrazole-7-carbonitrile

10-[5-[3-(2-Deoxy-β-D-erythro-pentofuranosyl)-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinyl]pentyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid

Thymidine, 3-(5-bromopentyl)-

Uridine, 2′,3′-O-(1-methylethylidene)-, 5′-[ethyl [(2S)-3-[(2S,3S,4S,5S)-5-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2-pyrrolidinyl]-2-hydroxypropyl]phosphonate]

Uridine, 2′,3′-O-(1-methylethylidene)-, 5′-[ethyl [(2S)-3-[(2S,3S,4S,5S)-5-[(1S)-1,2-bis(phenylmethoxy)ethyl]-3,4-bis(phenylmethoxy)-2-pyrrolidinyl]-2-hydroxypropyl]phosphonate]

Uridine, 2′,3′-O-(1-methylethylidene)-, 5′-[ethyl [[(2S,3aS,4S,5S,6S)-6-[(1S)-1,2-bis(phenylmethoxy)ethyl]hexahydro-4,5-bis(phenylmethoxy)pyrrolo[1,2-b]isoxazol-2-yl]methyl]phosphonate]

Uridine, 2′,3′-O-(1-methylethylidene)-, 5′-(ethyl 2-propenylphosphonate)

Guanosine 5′-(trihydrogen diphosphate) P′-(6-azido-6-deoxy-β-L-galactopyranosyl) ester

Guanosine 5′-(trihydrogen diphosphate), P′-(6,7-dideoxy-β-L-galacto-hept-6-ynopyranosyl) ester

Thymidine, 4-O-ethyl-, 3′,5′-diacetate

4-Chloro-1-(3,5-di-O-acetyl-2-deoxy-β-D-erythro-pentofuranosyl)-5-methyl-2(1H)-pyrimidinone

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[2-(methylsulfonyl)ethyl]thymidylyl-(3′→5′)-2′-deoxy-N-(diphenylacetyl)-, 3′-(4-oxopentanoate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-(methylsulfonyl)ethyl phosphorochloridite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-(2-cyano-1,1-dimethylethyl 4-morpholinylphosphonite)

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyano-1,1-dimethylethyl)thymidylyl-(3′→5′)-2′-deoxy-N-(diphenylacetyl)-

Thymidine, α-(acetylthio)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]