9-[5-O-[(1S)-1-[[(1S)-2-Butoxy-1-methyl-2-oxoethyl]amino]-7-methyl-1-oxido-5-oxo-2,4,6-trioxa-1-phosphooct-1-yl]-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide

1-[5-O-[(R)-[[(1S)-2-Butoxy-1-methyl-2-oxoethyl]amino][[[(1-methylethoxy)carbonyl]oxy]methoxy]phosphinyl]-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide

2,4-Dioxa-6-aza-5-phosphaoctanedioic acid, 5-[[(2S,5R)-5-(1,6-dihydro-6-oxo-9H-purin-9-yl)tetrahydro-2-furanyl]methoxy]-7-methyl-, 8-butyl 1-(1-methylethyl) ester, 5-oxide, (5S,7S)-

2,4-Dioxa-6-aza-5-phosphaoctanedioic acid, 5-[[(2S,5R)-5-(1,6-dihydro-6-oxo-9H-purin-9-yl)tetrahydro-2-furanyl]methoxy]-7-methyl-, 8-butyl 1-(1-methylethyl) ester, 5-oxide, (5R,7S)-

9-[5-O-[(1S)-1-[[(1S)-2-Butoxy-1-methyl-2-oxoethyl]amino]-7-methyl-1-oxido-5-oxo-2,4,6-trioxa-1-phosphooct-1-yl]-β-D-arabinofuranosyl]-9H-purin-6-amine

9-[5-O-[(1R)-1-[[(1S)-2-Butoxy-1-methyl-2-oxoethyl]amino]-7-methyl-1-oxido-5-oxo-2,4,6-trioxa-1-phosphooct-1-yl]-β-D-arabinofuranosyl]-9H-purin-6-amine

2,4-Dioxa-6-aza-5-phosphaoctanedioic acid, 5-[[(2S,5R)-5-(4-amino-2-oxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]methoxy]-7-methyl-, 8-butyl 1-(1-methylethyl) ester, 5-oxide, (5S,7S)-

2,4-Dioxa-6-aza-5-phosphaoctanedioic acid, 5-[[(2S,5R)-5-(4-amino-2-oxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]methoxy]-7-methyl-, 8-butyl 1-(1-methylethyl) ester, 5-oxide, (5R,7S)-

Thymidine, 3′-azido-3′-deoxy-, 5′-[[[(1-methylethoxy)carbonyl]oxy]methyl [P(S)]-N-[(1S)-2-butoxy-1-methyl-2-oxoethyl]phosphoramidate]

Thymidine, 3′-azido-3′-deoxy-, 5′-[[[(1-methylethoxy)carbonyl]oxy]methyl [P(R)]-N-[(1S)-2-butoxy-1-methyl-2-oxoethyl]phosphoramidate]

L-Alanine, N-[[P(S)]-hydroxy[[[(1-methylethoxy)carbonyl]oxy]methoxy]phosphinyl]-, 2,2-dimethylpropyl ester, 5′-ester with 1-β-D-ribofuranosyl-1H-1,2,4-triazole-3-carboxamide

1-[5-O-[(R)-[[(1S)-2-(2,2-Dimethylpropoxy)-1-methyl-2-oxoethyl]amino][[[(1-methylethoxy)carbonyl]oxy]methoxy]phosphinyl]-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide