Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other bioactive molecules targeting central nervous system disorders and cancer. Its piperazine core with pyrimidine and tert-butoxycarbonyl (Boc) protection allows for selective modifications in drug design, enhancing metabolic stability and solubility. Commonly employed in medicinal chemistry for building blocks in structure-activity relationship (SAR) studies.