Used in cancer research to study and inhibit the activity of epidermal growth factor receptor (EGFR) tyrosine kinase, which plays a critical role in cell growth and proliferation. It is particularly valuable in understanding the mechanisms of EGFR-driven cancers, such as lung, breast, and colorectal cancers. Researchers utilize it to explore potential therapeutic strategies and to evaluate the effectiveness of targeted treatments in preclinical models. Additionally, it serves as a tool compound in biochemical assays to investigate signal transduction pathways and cellular responses to EGFR inhibition.