Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its structure allows for selective modification, making it valuable in creating targeted therapies. Commonly employed in research settings to design drugs that inhibit specific signaling pathways involved in tumor growth and inflammation. Also utilized in the preparation of EGFR (epidermal growth factor receptor) inhibitors due to its ability to bind effectively within the ATP-binding site of the enzyme.