9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1-((2-methoxyethoxy)methyl)-1H-purin-6(9H)-one

5-azido-1-β-D-ribofuranosyl-1H-imidazole-4-carboxamide

5-amino-1-(5'-O-tert-butyldimethylsilyl-2',3'-O-isopropylidene-β-D-ribofuranosyl)imidazole-4-carboxamide

5-amino-1-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]imidazole-4-carbonitrile

1-(2,4-dinitrophenyl)inosine