Used as a protected amine reagent in organic synthesis, particularly in the preparation of complex molecules where selective protection of functional groups is required. The silyl group provides stability under various reaction conditions and can be selectively removed to reveal the amine functionality when needed. Commonly employed in peptide synthesis and medicinal chemistry for constructing nitrogen-containing compounds with high regio- and stereocontrol. Its tosylamide structure enhances crystallinity and aids in purification, making it valuable in multi-step synthetic routes.