Used as a key intermediate in the synthesis of kinase inhibitors, particularly in pharmaceuticals targeting cancer and inflammatory diseases. Its structure enables selective binding to enzyme active sites, making it valuable in drug development for tyrosine kinase and cyclin-dependent kinase inhibitors. Also employed in the preparation of antiviral agents due to its ability to mimic purine bases in nucleic acid analogs. Commonly utilized in medicinal chemistry for scaffold modification to enhance potency and bioavailability of lead compounds.