Used as a key intermediate in the synthesis of kinase inhibitors, particularly in the development of pharmaceuticals targeting cancer and inflammatory diseases. Its structure allows for selective modification to enhance binding affinity with specific enzyme targets. Commonly employed in medicinal chemistry for constructing pyrrolopyrimidine-based drug candidates due to its reactivity and stability in multi-step synthesis. Also utilized in research settings to explore new bioactive molecules with potential antitumor and antiviral activities.