Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its aldehyde functional group allows for easy derivatization, enabling the formation of Schiff bases or other condensation products critical in drug design. Also employed in the preparation of sulfone-containing bioactive molecules due to the electron-withdrawing nature of the sulfonyl group, which can enhance metabolic stability and binding affinity. Additionally, it serves as a building block in agrochemicals and functional materials where aromatic aldehydes with polar substituents are required.