Used as a silylating agent in organic synthesis, particularly for the protection of alcohols and phenols. It selectively introduces the tert-butyldimethylsilyl (TBDMS) group under mild conditions, offering good stability and compatibility with various functional groups. Its application is prominent in multi-step syntheses, especially in the preparation of complex molecules like natural products and pharmaceuticals, where controlled protection and deprotection are critical. The reagent is valued for its ease of handling and reliable performance in anhydrous environments.