Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of local anesthetics and antiarrhythmic drugs. It serves as a building block in peptide mimetics and helps improve lipophilicity in drug design, enhancing membrane permeability. Also employed in the preparation of active pharmaceutical ingredients (APIs) where a protected glycine derivative with a butyl ester group is required. Its hydrochloride salt form improves stability and handling during manufacturing processes.