Used as a silyl-protected reagent in organic synthesis, particularly in the preparation of functionalized nitriles and cyano-containing compounds. Its silyl ether group provides stability and selectivity during multi-step reactions, making it valuable in the synthesis of pharmaceuticals and fine chemicals. Commonly employed in nucleophilic addition reactions where controlled reactivity is required. The tert-butyldimethylsilyl (TBS) group can be selectively removed under mild conditions, allowing for further derivatization in complex molecule assembly.