2’,3’,5’-Tri-O-acetyl Guanosine-13C2,15N is an intermediate in the synthesis of 8-Aminoguanosine-13C2,15N (A609877). 8-Aminoguanosine-13C2,15N is an isotopic labelled compound of 8-Aminoguanosine (A609875), which is a potent inhibitor of purine nucleoside phosphorylase.