Used in bioconjugation processes to link biomolecules such as proteins and peptides to other molecules or surfaces. Its maleimide group selectively reacts with thiol groups, making it ideal for creating stable thioether bonds in antibody-drug conjugates and diagnostic probes. The hydrazide functionality allows coupling to aldehyde or ketone groups, enabling site-specific modification of carbohydrates in glycoproteins. Commonly applied in the development of targeted therapeutics, imaging agents, and biosensors. Its long spacer arm improves binding accessibility and reduces steric hindrance in complex biological systems.