Used as a reagent in organic synthesis, particularly in the preparation of pyridinium-based ionic liquids. It serves as a precursor in the development of catalysts for esterification and oxidation reactions. Also employed in the modification of biomolecules due to its ability to form stable carboxylate derivatives. Its zwitterionic character makes it useful in studies involving phase-transfer catalysis and in the design of functional materials with enhanced solubility and stability.