N-(Aminocarbonyl)-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-O-methylguanosine

5-Chlorouridine 5'-(trihydrogen diphosphate)

2'-Deoxy-5-(1-dodecyn-1-yl)-2'-fluorouridine

5-(1-Decyn-1-yl)-2'-deoxy-2'-fluorouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-[(dimethylamino)methylene]-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-2-iodoadenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-[(dimethylamino)methylene]-2-iodoadenosine

2'-O-[Bis[2-(acetyloxy)ethoxy]methyl]-N-[(dimethylamino)methylene]-2-iodoadenosine

N-[(Dimethylamino)methylene]-2-iodoadenosine

3'-[[(2S)-2-Amino-3-(4-methoxyphenyl)-1-oxopropyl]amino]-2',3'-dideoxy-2'-fluoroadenosine

3'-[[(2S)-2-Amino-3-(4-methoxyphenyl)-1-oxopropyl]amino]-3'-deoxyinosine

8-Amino-1-methylinosine

N-Acetyl-8-amino-6-O-methylguanosine

N-Acetyl-8-methoxy-6-O-methylguanosine

8-Methoxy-6-O-methylguanosine

8-Methoxy-1-methylinosine

8-Methoxy-1-methylguanosine

2'-Deoxy-5-iodo-3-methylcytidine

2'-Deoxy-5-(1H-indol-2-yl)-N-methylcytidine

2'-Deoxy-4'-C-(methoxymethyl)-5-methylcytidine

5-[3-[[3-[1-[2-[[(8-Borono-2-quinolinyl)methyl]methylamino]-2-oxoethyl]-1H-1,2,3-triazol-4-yl]-1-oxopropyl]amino]-1-propyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)