Boc-D-Tyr-OH is widely used in peptide synthesis as a protected form of tyrosine. It serves as a building block for creating complex peptides, ensuring the tyrosine residue remains stable during the reaction process. This compound is particularly valuable in pharmaceutical research for developing peptide-based drugs, where precise amino acid sequences are critical. Additionally, it is employed in biochemical studies to investigate protein interactions and functions, providing insights into biological pathways. Its application extends to the production of custom peptides for therapeutic and diagnostic purposes.