Used as a protected hydroxylamine derivative in organic synthesis, particularly in the preparation of N-protected hydroxylamines for use in nitrene transfer reactions. It serves as a convenient reagent for the introduction of the N–OH functionality in a controlled manner, allowing for subsequent transformations such as C–H amination or aziridination when activated by appropriate metal catalysts. Its stability and selective deprotection characteristics make it valuable in multi-step syntheses, especially in pharmaceutical and agrochemical research where nitrogen-containing heterocycles are common. The tert-butyldimethylsilyl (TBS) group provides steric protection, enhancing the reagent’s shelf life and functional group compatibility.