Used as a crosslinking agent in polymer chemistry, particularly in the development of hydrogels and specialty resins. It reacts with aldehydes or ketones to form hydrazone linkages, enabling controlled gelation and network formation. Applied in drug delivery systems for its ability to create biocompatible matrices that respond to pH or temperature changes. Also utilized in the synthesis of functional coatings and adhesives where stability and reactivity under mild conditions are required. Its bifunctional hydrazide structure makes it valuable in bioconjugation and modification of biomolecules for diagnostic and therapeutic applications.