This chemical is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a protected form of trans-4-hydroxyproline, ensuring the hydroxyl group remains stable during the synthesis process. The Fmoc group protects the amino group, while the tert-butyl group shields the hydroxyl group, allowing for selective deprotection at different stages. It is especially valuable in the production of complex peptides and proteins, where precise control over amino acid reactivity is crucial. Additionally, it is employed in the development of peptidomimetics and bioactive peptides for pharmaceutical research, contributing to drug discovery and therapeutic applications. Its stability and compatibility with various coupling reagents make it a preferred choice in peptide chemistry.