This compound, (2-Azidoethoxy)(tert-butyl)dimethylsilane, is a bifunctional reagent in organic synthesis. It features a tert-butyldimethylsilyl (TBDMS) protecting group on the ethanol moiety, which shields the hydroxyl group during reactions, and a terminal azido group for selective functionalization. The azide enables efficient participation in click chemistry, particularly the copper-catalyzed azide-alkyne cycloaddition (CuAAC), for applications in bioconjugation, pharmaceuticals, and materials science. After azide reaction, deprotection reveals the hydroxyl group for further molecular assembly, making it ideal for constructing complex architectures in a controlled manner.