Fmoc-Thr(tBu)-OH is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for introducing threonine residues into peptides while protecting the hydroxyl group with a tert-butyl (tBu) group. The Fmoc (9-fluorenylmethoxycarbonyl) group provides temporary protection for the amino group, allowing for selective deprotection during the synthesis process. This compound is essential in the production of complex peptides and proteins for research, pharmaceuticals, and biotechnology applications. Its stability and compatibility with Fmoc-based synthesis protocols make it a valuable tool in the development of therapeutic peptides, vaccines, and diagnostic agents.