Used in bioconjugation processes to label and immobilize biomolecules, particularly in diagnostic assays and biochemical research. Its hydrazide group reacts selectively with aldehyde or ketone groups on glycoproteins or oxidized nucleic acids, forming stable hydrazone bonds. Commonly employed in ELISA, Western blotting, and microarray applications for detection and purification. Also utilized in affinity tagging and immobilization on solid supports such as magnetic beads or sensor surfaces. Valued for its high specificity and compatibility with various detection systems, including enzyme-linked and fluorescence-based methods.