This compound, Boc-D-Gln-OH, is the N-Boc protected form of D-glutamine and is commonly used in peptide synthesis as a protecting group for the amino acid. The Boc (tert-butyloxycarbonyl) group safeguards the amine functionality during the synthesis process, preventing unwanted side reactions. It is particularly valuable in solid-phase peptide synthesis (SPPS), where selective deprotection allows for the stepwise construction of peptide chains. The D-enantiomer is often employed to introduce specific stereochemical properties, such as enhanced stability against proteolytic enzymes in therapeutic peptides. Additionally, it finds application in the preparation of custom peptides for research in biochemistry and pharmacology, aiding in the study of protein interactions and the development of therapeutic agents. Its stability under various conditions makes it a reliable choice for complex peptide assembly.