This bifunctional compound, featuring a maleimide moiety and a hydrazide group, is primarily utilized in bioconjugation and protein modification. The maleimide enables selective attachment to thiol groups (e.g., cysteines in proteins), while the hydrazide allows specific conjugation with aldehydes or ketones (e.g., oxidized glycans). It serves as a reactive linker molecule, enabling the attachment of various biomolecules, such as proteins or peptides, to other functional groups or surfaces. This makes it valuable in the development of antibody-drug conjugates (ADCs) and other targeted therapeutic agents. Additionally, it is employed in the preparation of diagnostic reagents, where precise labeling of biomolecules is essential for detection and analysis. Its stability and reactivity under physiological conditions make it a useful tool in biochemical research and pharmaceutical applications.