Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and anticancer agents. Its structure allows for easy functionalization, making it valuable in medicinal chemistry for creating derivatives with biological activity. Commonly employed in cross-coupling reactions such as Suzuki or Heck reactions to build complex heterocyclic systems. Also utilized in the preparation of kinase inhibitors and receptor modulators due to its ability to mimic purine moieties in biological systems.