This compound is commonly used in peptide synthesis as a protected amino acid derivative. The tert-butyl ester group (OtBu) serves as a protecting group for the carboxyl function, preventing unwanted reactions during peptide bond formation. The hydrochloride salt form enhances its stability and solubility, making it easier to handle in organic synthesis. It is particularly useful in solid-phase peptide synthesis (SPPS) and solution-phase peptide synthesis, where controlled deprotection is required to build complex peptide chains. Its application extends to the production of pharmaceuticals, bioactive peptides, and research compounds in medicinal chemistry.