1H-Imidazo[4,5-c]pyridin-4-amine, 1-[5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-ribofuranosyl]-

1H-Imidazo[4,5-c]pyridin-4-amine, 1-[3-deoxy-3-methyl-5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-ribofuranosyl]-

1-[3-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-3-methyl-β-D-ribofuranosyl]-1H-imidazo[4,5-c]pyridin-4-amine

1H-Imidazo[4,5-c]pyridin-4-amine, 1-[3-deoxy-5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-erythro-pentofuranosyl]-

1-[3-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1H-imidazo[4,5-c]pyridin-4-amine

7H-Pyrrolo[2,3-d]pyrimidine-5-carboxamide, 2-amino-7-[3-deoxy-3-fluoro-5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-ribofuranosyl]-

2-Amino-7-[3-deoxy-3-fluoro-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide

7H-Pyrrolo[2,3-d]pyrimidine-4,6-diamine, 7-[5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-ribofuranosyl]-

7-[5-O-[Hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine-4,6-diamine

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-ribofuranosyl]-

1H-Imidazo[4,5-c]pyridin-4-amine, 1-[3-deoxy-3-fluoro-5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-ribofuranosyl]-

1-[3-Deoxy-3-fluoro-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-1H-imidazo[4,5-c]pyridin-4-amine

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-arabinofuranosyl]-

7H-Pyrrolo[2,3-d]pyrimidin-2-amine, 7-[2-deoxy-5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-erythro-pentofuranosyl]-

7-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-2-amine

5′-Adenylic acid, 3′-deoxy-3′-methyl-, bis[[[(1-methylethoxy)carbonyl]oxy]methyl] ester

5′-Adenylic acid, 2′-deoxy-2′-fluoro-, bis[[[(1-methylethoxy)carbonyl]oxy]methyl] ester

5′-Adenylic acid, 2-amino-2′-O-methyl-, bis[[[(1-methylethoxy)carbonyl]oxy]methyl] ester

2,4(1H,3H)-Pyrimidinedione, 1-[2-C-methyl-5-O-[7-methyl-1-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1-oxido-5-oxo-2,4,6-trioxa-1-phosphaoct-1-yl]-β-D-arabinofuranosyl]-

5′-Cytidylic acid, 5-ethynyl-2′-O-(2-methoxyethyl)-, bis[[[(1-methylethoxy)carbonyl]oxy]methyl] ester