Used in bioconjugation and chemical synthesis, this compound serves as a protective group for amines, enabling controlled reactions in peptide and protein modification. Its azide group facilitates click chemistry, particularly in the creation of complex biomolecules. The PEG spacer enhances solubility and reduces steric hindrance, making it suitable for applications in drug delivery, biopolymer engineering, and targeted therapies. It is also employed in the development of diagnostic probes and imaging agents due to its stability and reactivity in biological systems.