Used primarily in the field of bioconjugation, this chemical serves as a linker molecule for attaching various bioactive molecules, such as drugs, peptides, or proteins, to other entities like nanoparticles or polymers. Its polyether chain provides flexibility and solubility in aqueous environments, making it suitable for applications in drug delivery systems where controlled release is essential. Additionally, it is employed in the development of diagnostic agents, where it helps in creating stable and biocompatible conjugates for imaging or detection purposes. The carboxylic acid group allows for easy functionalization, enabling its use in synthesizing tailored biomaterials for therapeutic or research applications.