Used extensively in bioconjugation and click chemistry, it serves as a linker molecule to attach biomolecules like proteins, peptides, or antibodies to other functional groups or surfaces. Its PEG spacer enhances solubility and reduces steric hindrance, making it ideal for creating stable and biocompatible conjugates. Applied in drug delivery systems, it helps in targeted therapy by conjugating drugs to carriers. Additionally, it is utilized in the development of diagnostic tools, biosensors, and imaging agents due to its efficient azide-alkyne cycloaddition properties. Its versatility also extends to material science for surface modifications and functionalization of nanoparticles or polymers.