Fmoc-D-Tyr-OH is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protected form of D-tyrosine, where the Fmoc (fluorenylmethyloxycarbonyl) group acts as a temporary protecting group for the amino group during the synthesis process. This compound is essential for incorporating D-tyrosine residues into peptides, which is crucial for creating peptides with specific chiral properties or biological activities. It is commonly employed in the development of pharmaceuticals, bioactive peptides, and research tools for studying protein-protein interactions, enzyme mechanisms, and receptor binding. Additionally, its use enables the production of peptides with enhanced stability or resistance to enzymatic degradation, making it valuable in drug discovery and biochemical research.