Used primarily as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of central nervous system (CNS) active compounds. Its rigid cyclobutyl structure with a bulky tert-butylphenyl group enhances selectivity and metabolic stability in drug candidates. It is employed in the preparation of receptor modulators, including those targeting serotonin and dopamine receptors. The amine functionality allows for easy derivatization, making it valuable in medicinal chemistry for structure-activity relationship (SAR) studies. Its hydrochloride salt form improves solubility and handling in aqueous reaction systems.