N-[9-((2R,4S,5R)-4-Azido-5-azidomethyl-tetrahydro-furan-2-yl)-6-oxo-6,9-dihydro-1H-purin-2-yl]-isobutyramide

N2-isobutyryl-2'-deoxyxyloguanosine

N-{9-[(2R,4S,5R)-4-Amino-5-({[(4-methoxy-phenyl)-diphenyl-methyl]-amino}-methyl)-tetrahydro-furan-2-yl]-6-oxo-6,9-dihydro-1H-purin-2-yl}-isobutyramide

Methanesulfonic acid (2R,3R,5R)-5-(2-isobutyrylamino-6-oxo-1,6-dihydro-purin-9-yl)-2-methanesulfonyloxymethyl-tetrahydro-furan-3-yl ester

3-S-acetyl-5-O-(4,4-dimethoxytriphenyl)methyl-N-2-isobutyryl-3-thio-2-3-didesoxyguanosine