1-[5-O-[Hydroxy(phosphonooxy)phosphinyl]-β-D-ribofuranosyl]-1H-benzimidazole

5-Ethynyl-1-[5-O-(hydroxymercaptophosphinyl)-β-D-ribofuranosyl]-1H-imidazole-4-carboxamide

5-Ethynyl-1-[5-O-(hydroxymethylphosphinyl)-β-D-ribofuranosyl]-1H-imidazole-4-carboxamide

5-[(Methylamino)methyl]-2',3'-O-(1-methylethylidene)-2-thiouridine

Adenosine, N-cyclopentyl-5'-O-(2-fluorophenyl)-

5-Ethynyl-1-[5-O-[(fluoromethyl)hydroxyphosphinyl]-β-D-ribofuranosyl]-1H-imidazole-4-carboxamide

5-Ethynyl-1-[2,3-O-(1-methylethylidene)-5-O-(phosphonomethyl)-β-D-ribofuranosyl]-1H-imidazole-4-carboxamide

5-Methyl-2'-O-methyluridylyl-(3'→5')-5-methyl-2'-O-methyluridine

5-Ethynyl-1-[5-O-(phosphonomethyl)-β-D-ribofuranosyl]-1H-imidazole-4-carboxamide

1-[5-O-[(Difluoromethyl)hydroxyphosphinyl]-β-D-ribofuranosyl]-5-ethynyl-1H-imidazole-4-carboxamide

Adenosine, 5'-S-[(4-chlorophenyl)methyl]-5'-thio-

Cytidine, 2'-deoxy-5-ethynyl-3',5'-bis-O-[tris(1-methylethyl)silyl]-

Cytidine, 2'-deoxy-5-[(trimethylsilyl)ethynyl]-3',5'-bis-O-[tris(1-methylethyl)silyl]-

Pyridinium, 3-(aminocarbonyl)-1-[5-O-[hydroxy(phosphonooxy)phosphinyl]-β-D-ribofuranosyl]-, inner salt, P'→5'-ester with 1-β-D-ribofuranosyl-1H-benzimidazole

(5S,6S)-[5,5'':6,6''-Dicyclo]-(5R,6R)-5,6-dihydro-5-methyl-2'-O-methyluridylyl-(3'→5')-5,6-dihydro-5-methyl-2'-O-methyluridine

Uridine, 5-[[3',6'-bis(acetyloxy)-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl]ethynyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-

Uridine, 5-[[3',6'-bis(acetyloxy)-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl]ethynyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-, 3'-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5-[[3',6'-bis(acetyloxy)-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-6-yl]ethynyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-

Uridine, 5-[[3',6'-bis(acetyloxy)-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-6-yl]ethynyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-, 3'-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

2'-Deoxy-3-methyl-3',5'-di-O-methyluridine