Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to undergo selective substitutions at the 2- and 4-positions, enabling the creation of biologically active molecules. Commonly employed in research settings for designing drugs targeting tyrosine kinases and other enzyme systems involved in signal transduction pathways. Its scaffold is valued for enhancing binding affinity and selectivity in drug candidates.