Boc-Sar-OH is widely used in peptide synthesis as a protecting group for amino acids. It helps in preventing unwanted side reactions during the formation of peptide bonds. This compound is particularly useful in solid-phase peptide synthesis (SPPS), where it ensures the selective deprotection and coupling of amino acids, leading to the efficient production of complex peptides. Additionally, it is employed in the synthesis of peptidomimetics and other biologically active molecules, where precise control over the sequence and structure is crucial. Its stability under various reaction conditions makes it a valuable tool in organic and medicinal chemistry research.