5′-Inosinic acid, anhydride with butanoic acid (1:1)

5′-Uridylic acid, anhydride with butanoic acid (1:1)

3′-Deoxy-3′-oxo-5′-adenylic acid

N1-[5-Amino-1-(5-O-phosphono-β-D-ribofuranosyl)-1H-imidazol-4-yl]butanediamide

9-[5-O-[Hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranos-3-ulos-1-yl]-9H-purin-6-amine

N-(5-Amino-1-β-D-ribofuranosyl-1H-imidazol-4-yl)carbamic acid

1-[2-Deoxy-5-O-[[[[(6-deoxy-5-C-methyl-α-D-erythro-hexopyranos-4-ulos-1-yl)oxy]hydroxyphosphinyl]oxy]hydroxyphosphinyl]-β-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

8-Bromo-8-(9H-fluoren-2-ylamino)-7,8-dihydroguanosine

2′-Deoxy-2′-oxoinosine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-2-propen-1-yladenosine

8-(9H-Fluoren-2-ylamino)-7,8-dihydro-8-methylguanosine

6-Chloro-9-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-2-propen-1-yl-β-D-erythro-pentofuranosyl]-9H-purine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2,2-dimethyl-1-oxopropyl)-5′-O-2-propen-1-yladenosine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-(phenylmethyl)adenosine

6-Chloro-9-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-(phenylmethyl)-β-D-erythro-pentofuranosyl]-9H-purine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2,2-dimethyl-1-oxopropyl)adenosine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2,2-dimethyl-1-oxopropyl)-5′-O-(phenylmethyl)adenosine

Adenosine, 2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2,2-dimethyl-1-oxopropyl)-, 5′-acetate

9-[5-O-Benzoyl-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-6-chloro-9H-purine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-6-S-methyl-6-thioinosine