This chemical is widely used in bioconjugation and click chemistry applications due to its azide functional group, which allows for efficient and selective reactions with alkyne-containing molecules. It is particularly valuable in the modification of biomolecules, such as proteins, peptides, and antibodies, enabling the attachment of labels, probes, or other functional groups for research or therapeutic purposes. The PEG spacer enhances solubility and reduces steric hindrance, making it suitable for applications in drug delivery systems, where it can improve the pharmacokinetic properties of conjugated drugs. Additionally, it is utilized in the development of biofunctional materials and surface modifications for biosensors or diagnostic tools. Its versatility and biocompatibility make it a key component in various biomedical and biotechnological fields.