Used as an intermediate in the synthesis of biologically active compounds, particularly in the development of kinase inhibitors for cancer therapy. It serves as a building block in medicinal chemistry for modifying purine scaffolds to enhance binding affinity and selectivity toward specific enzymes. Commonly employed in the preparation of nucleoside analogs with potential antiviral or antitumor properties. Also utilized in research settings to study signal transduction pathways and enzyme mechanisms involving ATP-binding proteins.