DL-2,3-Diaminopropionic acid hydrochloride is primarily used in biochemical research and pharmaceutical development. It serves as a precursor in the synthesis of various amino acids and peptides, which are essential for studying protein structures and functions. This compound is also utilized in the preparation of chiral ligands and catalysts, aiding in asymmetric synthesis processes. Additionally, it finds application in the development of drugs targeting neurological disorders, as it can influence neurotransmitter activity. Its role in creating bioactive molecules makes it valuable in medicinal chemistry and drug discovery.