Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals targeting kinase inhibition. It serves as a building block in the development of anticancer agents and anti-inflammatory drugs due to its ability to mimic purine bases in nucleotide-binding sites. Its structure allows for selective modification, enabling optimization of drug potency and selectivity. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies in drug discovery programs.