Mal-PEG2-NH-Boc is widely used in bioconjugation and drug delivery systems. It serves as a linker molecule, enabling the attachment of active pharmaceutical ingredients (APIs) to targeting molecules such as antibodies or peptides. The Boc group provides protection for the amine functionality during synthesis, ensuring selective reactions. The maleimide group allows for efficient conjugation with thiol-containing molecules, making it valuable in the development of antibody-drug conjugates (ADCs) and targeted therapies. Its PEG spacer enhances solubility and reduces immunogenicity, improving the pharmacokinetic properties of the final product. This compound is particularly useful in cancer research and precision medicine for creating highly specific and effective therapeutic agents.