This chemical is primarily utilized in the field of bioconjugation and peptide synthesis. It serves as a versatile linker or spacer molecule, enabling the attachment of various functional groups or biomolecules to a target structure. Its unique structure, featuring a fluorenyl group and multiple ethylene oxide units, provides stability and flexibility, making it suitable for applications in drug delivery systems. It is often employed to enhance the solubility and bioavailability of therapeutic compounds. Additionally, its reactive carboxylic acid group allows for covalent bonding with amines or other nucleophiles, facilitating the creation of complex molecular architectures in research and pharmaceutical development.