Used as a bifunctional linker in pharmaceutical and bioconjugation chemistry, enabling the coupling of biomolecules such as peptides, proteins, or drugs to carriers, surfaces, or detection tags. The Boc-protected amine allows for selective deprotection and further reaction under mild acidic conditions, while the succinyl group provides a carboxylic acid handle for amide bond formation. Its hydrophilic trioxa chain enhances solubility in aqueous and mixed solvent systems, making it valuable in the development of PEG-like spacers for drug delivery, diagnostic probes, and targeted therapeutics. Commonly employed in solid-phase synthesis and the construction of complex molecular architectures where controlled reactivity and spacer length are critical.