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

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]-

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-

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]

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]-5-yl]ethynyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-

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

Uridine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-5-ethynyl-, 3'-(hydrogen butanedioate)

Uridine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-5-ethynyl-, 3'-(4-oxopentanoate)

Cytidine, 3'-C-ethynyl-5'-O-[methoxy(4-nitrophenyl)methyl]-

Cytidine, 2',3'-O-[(S)-(3-aminophenyl)methylene]-3'-C-ethynyl-

Cytidine, 2',3'-O-[(S)-(4-aminophenyl)methylene]-3'-C-ethynyl-

Cytidine, 3'-C-ethynyl-2',3'-O-[(S)-(3-nitrophenyl)methylene]-

Cytidine, 3'-C-ethynyl-2',3'-O-[(S)-(4-nitrophenyl)methylene]-

2'-Deoxy-6-S-(1-methyl-4-nitro-1H-imidazol-5-yl)-6-thioguanosine

Cytidine, 5'-O-[ethoxy(4-nitrophenyl)methyl]-3'-C-ethynyl-