Used in the synthesis of kinase inhibitors for cancer treatment, particularly in targeting tyrosine kinases involved in tumor growth and proliferation. Serves as a core scaffold in developing pharmaceuticals for oncology due to its structural similarity to purine bases, allowing interference with cellular signaling pathways. Also employed in the design of anti-inflammatory and antiviral agents. Commonly modified to enhance binding affinity and selectivity in drug candidates. Widely utilized in medicinal chemistry research for lead optimization in small molecule drug discovery.