β-D-arabino-Guanosine, 2′-doxy-2′-fluoro-5′-O-(hydroxymercaptophosphinyl)-P-thio-8-aza-β-D-arabino-adenylyl-(3′→5′)-, cyclic (2′→5′)-nucleotide

5-Bromo-1,7-dihydro-7-β-D-ribofuranosyl-4H-pyrrolo[2,3-d]pyrimidin-4-one

4,5-Dichloro-7-β-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidine

7H-Pyrrolo[2,3-d]pyrimidine, 4-(hydroxyamino)-5-iodo-7-β-D-ribofuranosyl-

5-Bromo-4-(methylthio)-7-β-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidine

5-Bromo-N,N-dimethyl-7-β-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine

5-Bromo-N-methyl-7-β-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine

1-β-D-Ribofuranosyl-4,6(1H,5H)-pyrimidinedione

N-Ethyl-2,3-dihydro-2′,3′-O-(1-methylethylidene)-2-oxoadenosine

Isoguanosine, 2′,3′-O-isopropylidene-N,N-dimethyl-

N-Ethyl-2,3-dihydro-2-oxoadenosine

Xanthosine, 2′,3′-O-isopropylidene-6-thio-

6-Thioxanthosine

Xanthosine, 6-S-methyl-6-thio-

Acetic acid, thio-, anhydrosulfide with 5-amino-1-(2,3-O-isopropylidene-β-D-ribofuranosyl)thioimidazole-4-carboximidic acid