Boc-Tyr(tBu)-OH is widely used in peptide synthesis as a protected form of tyrosine. It serves as a key building block in the creation of complex peptides, ensuring the tyrosine side chain remains intact during the synthesis process. This chemical is particularly valuable in solid-phase peptide synthesis (SPPS), where it helps in the stepwise assembly of peptides by providing stability and preventing unwanted reactions. Additionally, it is employed in the development of pharmaceuticals, bioactive peptides, and research compounds, where precise control over peptide structure is essential. Its protective groups can be selectively removed under specific conditions, allowing for further modifications and functionalization of the peptide chain.