Used as a protected amino alcohol building block in organic synthesis, particularly in the preparation of complex molecules such as pharmaceuticals and natural products. The tert-butyldimethylsilyl (TBS) group protects the hydroxyl functionality, allowing selective reactions at the amine site. This compound is valuable in multi-step syntheses where orthogonal protection strategies are required. It is commonly employed in peptide chemistry and the construction of bioactive molecules that require precise functional group manipulation.