4-Chloro-2-(2-deoxy-β-D-erythro-pentofuranosyl)-5-methoxy-3(2H)-pyridazinone

5-Amino-2-(2-deoxy-β-D-erythro-pentofuranosyl)-3(2H)-pyridazinone

5-Amino-4-chloro-2-(2-deoxy-β-D-erythro-pentofuranosyl)-3(2H)-pyridazinone

4,5-Dichloro-2-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-α-D-erythro-pentofuranosyl]-3(2H)-pyridazinone

4,5-Dichloro-2-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-3(2H)-pyridazinone

4,5-Bis[(phenylmethyl)thio]-2-β-D-ribofuranosyl-3(2H)-pyridazinone

4,5-Bis(methylthio)-2-β-D-ribofuranosyl-3(2H)-pyridazinone

5-(Dimethylamino)-2-β-D-ribofuranosyl-3(2H)-pyridazinone

Carbamic acid, [4-(aminocarbonyl)-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-1H-imidazol-5-yl]methyl-, ethyl ester

Thymidine, 5′→O′-ester with thiodiphosphoric acid ((HO)2P(O)OP(O)(OH)(SH))

Cytidine, 5′→O′-ester with thiodiphosphoric acid ((HO)2P(O)OP(O)(OH)(SH))

5′-Cytidylic acid, mono-β-D-glucopyranosyl ester

5′-Thymidylic acid, mono-β-D-glucopyranosyl ester

N-Benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]guanosine

Guanosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Guanosine, N-[[4-(1,1-dimethylethyl)phenyl]acetyl]-6-O-(2-nitrophenyl)-2′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Guanosine, N-[[4-(1,1-dimethylethyl)phenyl]acetyl]-2′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Uridine, 4-O-(2,4-dimethylphenyl)-2′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Uridine, 4-O-phenyl-2′-O-(tetrahydro-4-methoxy-2H-pyran-4-yl)-

Adenosine 5′-(trihydrogen diphosphate), 3′-(dihydrogen phosphate), P′→5′-ester with 6-carboxy-5-(carboxymethyl)-7,8-dihydro-8-oxo-2-β-D-ribofuranosyl-2,7-naphthyridinium, inner salt