Fmoc-Tyr-OH is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for introducing tyrosine residues into peptide chains. The Fmoc (fluorenylmethyloxycarbonyl) group acts as a protective group for the amino group, ensuring selective reactions during the synthesis process. This compound is essential in the production of peptides for research, pharmaceuticals, and biotechnology applications, such as drug development, hormone synthesis, and the study of protein interactions. Its stability and compatibility with SPPS make it a valuable tool in creating complex peptides with high precision.