Used as a key intermediate in the synthesis of tyrosine kinase inhibitors, particularly in anticancer drug development. It plays a critical role in constructing targeted therapies for cancers such as non-small cell lung cancer and chronic myeloid leukemia. Its structure enables selective binding to mutant kinase domains, improving drug specificity and reducing off-target effects. Also employed in medicinal chemistry research to develop new analogs with enhanced potency and pharmacokinetic profiles.