2'-Deoxy-3'-thioguanosine 5'-(tetrahydrogen triphosphate)

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4-S-(2-cyanoethyl)-2'-deoxy-4-thiouridine

5-(2-Amino-2-oxoethyl)-2'-O-methyluridine 5'-(tetrahydrogen triphosphate)

5-[(Methylamino)methyl]-2-thiouridine 5'-(tetrahydrogen triphosphate)

6-Methyl-2'-O-methyluridine 5'-(tetrahydrogen triphosphate)

(2'R)-5-Bromo-2'-deoxy-2'-fluoro-4'-C-fluoro-2'-methyluridine

5,6-Dihydro-5-methyluridine 5'-(tetrahydrogen triphosphate)

5-[[(3-Methyl-2-buten-1-yl)amino]methyl]-2-thiouridine 5'-(tetrahydrogen triphosphate)

N-Acetyl-2'-O-methylcytidine 5'-(tetrahydrogen triphosphate)

2'-Deoxy-3'-O-[20-ethyl-24-(6-iodo-2-quinoxalinyl)-1-methyl-24-oxo-2,5,8,11,14,17-hexaoxa-20,23-diazatetracos-1-yl]-5-iodouridine

2'-Deoxy-3'-O-[1-[2-[ethyl[2-[[(6-iodo-2-quinoxalinyl)carbonyl]amino]ethyl]amino]ethoxy]-1-methylethyl]-5-iodouridine

2'-Deoxy-3'-O-[32-ethyl-36-(6-iodo-2-quinoxalinyl)-1-methyl-36-oxo-2,5,8,11,14,17,20,23,26,29-decaoxa-32,35-diazahexatriacont-1-yl]-5-iodouridine

2'-Deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-4'-C-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2'-fluorouridine

2'-Deoxy-4'-C-ethyl-2'-fluorouridine

2'-Deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-ethyl-2'-fluorouridine

4'-C-(Chloromethyl)-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluorouridine

2'-Deoxy-3'-O-[1-[2-[ethyl[2-[[(6-iodo-2-quinoxalinyl)carbonyl]amino]ethyl]amino]ethoxy]ethyl]-5-iodouridine

2'-Deoxy-2'-fluoro-4'-C-methylcytidine

2'-Deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluoro-4'-C-methylcytidine

2'-Deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluoro-4'-C-methyluridine