Used in biochemical research for studying collagen metabolism and protein structure due to its role as a modified amino acid found in collagenous proteins. Serves as a precursor in the synthesis of peptides and helps in understanding post-translational modifications in proteins. Also utilized in cell culture applications where stable collagen analogs are required. Its hydrochloride form enhances solubility and stability in aqueous solutions, making it suitable for laboratory use in enzymatic assays and structural studies.