Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other bioactive molecules. Its aldehyde functionality allows for easy derivatization, enabling the formation of imines, oximes, or alkenes through condensation reactions, which are valuable in drug discovery. The azetidine ring contributes to metabolic stability and improved pharmacokinetic properties in final drug candidates. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid aromatic core and saturated heterocycle.