Used in peptide synthesis as a protecting group for aspartic acid, ensuring selective reactions during the formation of peptide bonds. It helps prevent unwanted side reactions by blocking the amino and carboxyl groups, allowing precise control over the assembly of complex peptides. Commonly employed in the production of pharmaceuticals and bioactive peptides, where maintaining the integrity of specific amino acids is crucial. Its stability under various reaction conditions makes it a reliable choice in organic and medicinal chemistry research.