Used in biochemical research to study protein structure and function, particularly in collagen and other proteins containing proline residues. It serves as a proline analog to investigate the role of proline in protein folding, stability, and enzyme activity. Additionally, it is utilized in the synthesis of peptide-based drugs and as a building block in organic chemistry for creating complex molecules. Its incorporation into peptides can help modify their biological activity and stability, making it valuable in drug development and biotechnology applications.