Used in pharmaceutical synthesis as a protected intermediate, particularly in the development of active pharmaceutical ingredients (APIs) where the piperazine ring is a key structural motif. The Boc (tert-butoxycarbonyl) group provides temporary protection of the nitrogen, allowing selective reaction at other sites in the molecule. Its ethyl-substituted piperazine core is valuable in constructing drug candidates targeting central nervous system disorders, metabolic diseases, and infectious conditions. Commonly employed in multi-step organic syntheses, especially in the preparation of kinase inhibitors and receptor agonists/antagonists. Preferred in research settings for its stability under various reaction conditions and ease of deprotection when needed.