Used as a protected amine building block in organic synthesis, particularly in the pharmaceutical industry. The tert-butoxycarbonyl (Boc) group allows for selective protection of the primary amine, enabling controlled multi-step reactions without interference. The ethylene glycol linker with an aminoethoxy group provides flexibility and polarity, making it useful in the synthesis of peptide mimetics, drug conjugates, and bioactive molecules. Commonly employed in the development of protease inhibitors, kinase inhibitors, and other therapeutic agents where precise amine functionality is required. Also utilized in solid-phase synthesis and as an intermediate in the preparation of functionalized polymers and dendrimers.