This chemical is widely utilized in bioconjugation and crosslinking applications, particularly in the development of drug delivery systems and biopharmaceuticals. Its structure, featuring reactive acid groups and PEG spacers, makes it ideal for linking biomolecules such as peptides, proteins, or antibodies to other functional entities like drugs, dyes, or nanoparticles. The PEG spacers enhance solubility, reduce immunogenicity, and improve stability of the resulting conjugates. It is also employed in the synthesis of hydrogels and other biomaterials for tissue engineering, where its properties facilitate controlled release and biocompatibility. Additionally, it serves as a key component in creating targeted therapies, enabling precise delivery of therapeutic agents to specific cells or tissues.