This compound is primarily utilized in peptide synthesis as a building block for creating specific peptide sequences. It serves as a form of the unnatural amino acid D-Pal (3-(3-pyridyl)-D-alanine), enabling controlled reactions during peptide chain assembly. Its application is significant in the development of pharmaceuticals, particularly in the design of peptide-based drugs, which require precise stereochemistry for biological activity. Additionally, it is used in research to study enzyme-substrate interactions and to explore the role of D-amino acids in biological systems. Its hydrochloride form ensures stability and solubility, making it suitable for various experimental and industrial processes.