Bromo-PEG2-MS is widely used in bioconjugation and chemical synthesis due to its reactive bromo group and PEG spacer. It serves as a linker molecule, enabling the attachment of functional groups, biomolecules, or drugs to target molecules. In drug delivery systems, it enhances solubility and stability of therapeutic compounds. It is also utilized in the development of antibody-drug conjugates (ADCs) for targeted cancer therapy. Additionally, it plays a role in surface modification of nanoparticles and materials for biomedical applications, improving biocompatibility and functionality. Its versatility makes it valuable in research and industrial settings for creating tailored molecular constructs.