This compound is primarily used in the field of peptide synthesis as a building block for creating complex peptide structures. It serves as a protected form of phenylglycine, which is crucial for the synthesis of peptides with specific sequences and functions. The hydrochloride salt form enhances its stability and solubility, making it easier to handle in laboratory settings. It is also utilized in pharmaceutical research for developing peptide-based drugs, particularly those targeting neurological and metabolic disorders. Additionally, it finds applications in the study of enzyme-substrate interactions and the development of enzyme inhibitors.