AG-1478 is a selective inhibitor of the epidermal growth factor receptor (EGFR) tyrosine kinase. It is widely used in research to block EGFR signaling pathways in cellular and molecular studies. This compound helps in investigating cell proliferation, apoptosis, and migration, particularly in cancer cell lines where EGFR overexpression plays a key role. It is commonly applied in studies related to tumor growth and signal transduction mechanisms. Due to its specificity, AG-1478 is valuable in validating the role of EGFR in various biological processes and in assessing potential therapeutic targets in oncology research.