mPEG16-Br is widely used in the field of polymer chemistry and bioconjugation due to its reactive bromine end group. It serves as a key building block for synthesizing PEGylated compounds, which are essential in drug delivery systems. The PEG (polyethylene glycol) chain enhances the solubility, stability, and biocompatibility of therapeutic agents, making it valuable in the development of pharmaceuticals. Additionally, the bromine functionality allows for further chemical modifications, such as nucleophilic substitution reactions, enabling the attachment of targeting moieties or other functional groups. This chemical is also utilized in surface modification to create antifouling coatings, improving the performance of medical devices and implants. Its versatility makes it a crucial component in advancing biomedical and materials science applications.