Used as a hydrophilic spacer arm in the synthesis of functionalized polymers and surface coatings. Its multiple ether linkages provide flexibility and water solubility, making it suitable for bioconjugation applications, especially in linking biomolecules to surfaces or nanoparticles while maintaining their activity. Commonly employed in diagnostic assays and drug delivery systems where a long, flexible, and polar linker is required to reduce steric hindrance. Also utilized in the preparation of PEG-like structures for improving biocompatibility and reducing nonspecific binding in biological environments.