P-[[(2R,3aR,4S,6R,6aR)-6-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-4-(hydroxymethyl)furo[3,4-b]furan-2-yl]methyl]phosphonic acid

P-[[(2S,3aR,4S,6R,6aR)-6-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-4-(hydroxymethyl)furo[3,4-b]furan-2-yl]methyl]phosphonic acid

P-[[(2S,3aR,4R,6R,6aS)-4-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-6-(hydroxymethyl)furo[3,4-b]furan-2-yl]methyl]phosphonic acid

P-[[(2R,3aR,4R,6R,6aS)-4-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)hexahydro-6-(hydroxymethyl)furo[3,4-b]furan-2-yl]methyl]phosphonic acid

5-Methyl-2′,3′-O-[(1R)-2-phosphonoethylidene]uridine

Guanylyl-(3′→5′)-guanylyl-(3′→5′)-adenylyl-(3′→5′)-uridylyl-(3′→5′)-guanosine

2′-Deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(7,8,9,10-tetrahydro-7,8,9-trihydroxybenzo[a]pyren-10-yl)guanosine

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-(5-hexynoate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-(5-hexynoate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-(4-pentynoate)

L-Valine, 5′-ester with 1-[3-O-(butoxycarbonyl)-2-deoxy-2-fluoro-β-L-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2′-Deoxycytidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyguanosine

Uridine, 2′-deoxy-5-(5-phenyl-3-isothiazolyl)-

5′-Thymidylic acid, bis(4-nitrophenyl) ester

5′-Thymidylic acid, bis(3-nitrophenyl) ester

8-Amino-3-β-D-ribofuranosyl[1,3,5]triazino[1,2-a]purin-10(3H)-one

2-(5-Methyl-2-furanyl)-6-(1-methyl-1H-pyrrol-2-yl)-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-purine

2,6-Bis(5-methyl-2-furanyl)-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-purine

6-Chloro-2-(5-methyl-2-furanyl)-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-purine

2,6-Bis(1-methyl-1H-pyrrol-2-yl)-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-purine