Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of neuromuscular blocking agents and cholinergic receptor modulators. It serves as a quaternary ammonium precursor in organic reactions, enabling the formation of bioactive pyridinium derivatives. Also employed in research settings to study acetylcholine esterase inhibition and ion channel interactions. Its ionic structure makes it suitable for catalysis in phase-transfer reactions and as a building block in the preparation of functionalized heterocycles for medicinal chemistry.