(2'R)-5'-O-[(2R,4S)-4-(3-Chlorophenyl)-2-oxido-1,3,2-dioxaphosphorinan-2-yl]-2'-deoxy-2',5-difluoro-2'-methyluridine

(2'R)-5'-O-[(2R,4S)-4-(3-Chlorophenyl)-2-oxido-1,3,2-dioxaphosphorinan-2-yl]-2'-deoxy-2'-fluoro-2'-methyluridine

5'-O-(14-Amino-1-hydroxy-1-oxido-2,6,11-triaza-1-phosphatetradec-1-yl)-2'-deoxy-6-thioguanylyl-(3'→5')-2'-deoxy-6-thioguanosine

2',3'-Dideoxy-2',3'-difluoro-4'-C-fluorouridine

3'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-2'-fluoro-4'-C-fluorouridine 5'-(tetrahydrogen triphosphate)

2',3'-Dideoxy-2',3'-difluoro-4'-C-fluorouridine 5'-(tetrahydrogen triphosphate)

6-[[(4-Chlorophenyl)methylene]amino]-2-S-methyl-2-thiouridine

2',3'-O-Ethylidene-5-methyluridine

2-Chloro-5,6-diiodo-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-1H-benzimidazole

2,5,6-Trichloro-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-benzimidazole

2'-Deoxy-5'-O-phosphono-6-thioguanylyl-(3'→5')-2'-deoxy-6-thioguanosine

5'-Guanylic acid, P'-anhydride with 7-methylguanosine 5'-[hydrogen P-(phosphonomethyl)phosphonate] 3'-[2-(methylamino)benzoate], inner salt

5'-Deoxy-2'-C-methyladenosine

(3'R)-2',3'-Dideoxy-2',2'-difluoro-3'-(hydroxymethyl)-3'-methylcytidine

L-Glutamic acid, 1-(phenylmethyl) ester, (5→5')-ester with 2'-deoxy-5-fluorouridine

L-Glutamic acid, N-[(1,1-dimethylethoxy)carbonyl]-, 1-(phenylmethyl) ester, (5→3')-ester with 2'-deoxy-5-fluorouridine

L-Glutamic acid, N-[(1,1-dimethylethoxy)carbonyl]-, 1-(phenylmethyl) ester, (5→5')-ester with 2'-deoxy-5-fluorouridine

L-Glutamic acid, N-[(3α,5β,7α)-3,7-dihydroxy-24-oxocholan-24-yl]-, (5→3')-ester with 2'-deoxy-5-fluorouridine

L-Glutamic acid, N-[(3α,5β,7α)-3,7-dihydroxy-24-oxocholan-24-yl]-, 1-(phenylmethyl) ester, (5→5')-ester with 2'-deoxy-5-fluorouridine

L-Glutamic acid, 1-(phenylmethyl) ester, (5→3')-ester with 2'-deoxy-5-fluorouridine