(R)-tert-Butyl 2-ethylpiperazine-1-carboxylate hydrochloride is primarily used in pharmaceutical research and development. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly in the creation of chiral molecules. Its structure is valuable in the production of drugs targeting the central nervous system, including potential treatments for neurological disorders and psychiatric conditions. The compound’s chiral nature allows for the development of enantiomerically pure pharmaceuticals, enhancing drug efficacy and reducing side effects. Additionally, it is utilized in the preparation of ligands for catalysis and in medicinal chemistry studies to explore new therapeutic agents.