Used in peptide synthesis as a protected dipeptide building block. The Boc (tert-butoxycarbonyl) group protects the amino terminus during coupling reactions, allowing selective formation of peptide bonds. Leu-Gly sequence serves as a structural motif in bioactive peptides, often used in research related to enzyme substrates or inhibitors. Commonly employed in solid-phase and solution-phase synthesis of larger peptides and peptidomimetics. Its protected form enables stepwise assembly without side reactions at the N-terminus, and the Boc group can be removed under mild acidic conditions, making it compatible with various synthetic strategies. Widely used in pharmaceutical research and development of peptide-based therapeutics.