Adenosine, 5′-O-[[[2-[[(4-azidophenyl)methyl]methylamino]ethyl]thio]hydroxyphosphinyl]-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Adenosine, 5′-O-[[[2-[[3-[(2-chloroethyl)(4-formylphenyl)amino]propyl](2-hydroxyethyl)amino]ethyl]thio]hydroxyphosphinyl]-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Adenosine, 2′-deoxy-5′-O-(hydroxymercaptophosphinyl)cytidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Adenosine, 2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Adenosine 5′-(trihydrogen diphosphate), P′→5′-ester with 2-β-D-ribofuranosyl-4-thiazolecarboxamide

2′-Deoxy-N-[2-[[[4-(1,1-dimethylethyl)phenoxy]acetyl]amino]-3-methyl-3H-imidazo[4,5-f]quinolin-5-yl]guanosine

2′-Deoxy-N-[2-[[[4-(1,1-dimethylethyl)phenoxy]acetyl]amino]-3-methyl-3H-imidazo[4,5-f]quinolin-5-yl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]guanosine

N-(2-Amino-3-methyl-3H-imidazo[4,5-f]quinolin-5-yl)-2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]guanosine

2′-Deoxy-N-(3-methyl-2-nitro-3H-imidazo[4,5-f]quinolin-5-yl)-6-O-(phenylmethyl)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]guanosine

2′-Deoxy-6-O-(phenylmethyl)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]guanosine

6-Methyl-7-β-D-ribofuranosyl-7H-imidazo[4,5-d]-1,2,3-triazin-4-amine

6-Bromo-7-β-D-ribofuranosyl-7H-imidazo[4,5-d]-1,2,3-triazin-4-amine

4,7-Diazido-1-(2,3,5-tri-O-benzoyl-2-C-methyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine

4,7-Diazido-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine

1-(2-C-Methyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine

4,7-Dichloro-1-(2-C-methyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine

4,7-Dichloro-1-(2,3,5-tri-O-benzoyl-2-C-methyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine

4,7-Dichloro-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine

1-(2-C-Methyl-β-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine-4,7-diamine

1-β-D-Ribofuranosyl-1H-imidazo[4,5-d]pyridazine-4,7-diamine