N-[(1,1-Dimethylethoxy)carbonyl]-β-alanine 2-[3-[(1-β-D-arabinofuranosyl-1,2-dihydro-2-oxo-4-pyrimidinyl)amino]-1,1-dimethyl-3-oxopropyl]-3,5-dimethylphenyl ester

Uridine, thymidylyl-(3′→5′)-5-(4-hydroxy-2-butenyl)-, intramol. P,5-ester

Uridine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidylyl-(3′→5′)-5-(4-hydroxy-2-butenyl)-2′,3′-O-(1-methylethylidene)-, intramol. P,5-ester

Uridine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-2-propenylthymidylyl-(3′→5′)-2′,3′-O-(1-methylethylidene)-5-(2-propenyl)-

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

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-2-propenylthymidylyl-(3′→5′)-P-2-propenylthymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-, cyclic (2E)-2-butene-1,4-diyl ester

Thymidine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-, cyclic (2E)-2-butene-1,4-diyl ester

Thymidine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-2-propenylthymidylyl-(3′→5′)-P-2-propenylthymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine 5′-(trihydrogen diphosphate), P′-(2,6-dideoxy-3-C-methyl-β-L-ribo-hexopyranosyl) ester

Guanosine, 8-[[(4-methoxyphenyl)methylene]hydrazino]-

Guanosine, 8-[[(3,4-dimethoxyphenyl)methylene]hydrazino]-

Uridine, 3-benzoyl-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-3′-[[[(trifluoromethyl)sulfonyl]oxy]methyl]-

Uridine, 3-benzoyl-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(hydroxymethyl)-5′-O-[(4-methoxyphenyl)diphenylmethyl]-

Uridine, 3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-[(hydroxyphosphinyl)methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[2-[[(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)acetyl]amino]ethyl]amino]-3-oxopropyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[2-[[(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)acetyl]amino]ethyl]amino]-3-oxopropyl]-

Uridine, 2′-deoxy-5-[3-[[2-[[(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)acetyl]amino]ethyl]amino]-3-oxopropyl]-

Uridine, 3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-[[3-[[4-[(3-aminopropyl)(trifluoroacetyl)amino]butyl](trifluoroacetyl)amino]propyl]carbamate]

Uridine, 3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-[[3-[[4-[(3-aminopropyl)amino]butyl]amino]propyl]carbamate]