Used as a hydrophilic spacer or linker in specialty chemical synthesis, particularly in modifying surfaces for biomedical applications. Its multiple ether groups and terminal hydroxyl and amino functionalities allow conjugation with biomolecules, dyes, or nanoparticles, making it useful in diagnostic assays and drug delivery systems. Frequently employed in the development of PEG-like coatings to improve solubility and reduce non-specific binding in biosensors and functionalized materials.