Used as a chiral auxiliary and protecting group in asymmetric synthesis, particularly in the preparation of optically active amino acids and amines. Its steric bulk and ability to stabilize intermediates make it valuable in enantioselective reactions. Commonly employed in pharmaceutical synthesis where stereochemical control is critical. The cyano and carbamate functionalities allow further transformation, enabling multi-step organic syntheses. Stable under various reaction conditions, it can be selectively removed when needed, offering flexibility in synthetic routes.