Used as a chelating agent in metal ion extraction and purification processes, particularly effective in separating transition metals due to its selective binding properties. Employed in analytical chemistry for the determination of metal ions in environmental and biological samples. Also serves as a precursor in the synthesis of pharmaceuticals and agrochemicals, where it contributes to the formation of nitrogen-containing heterocyclic compounds. Its hydrochloride form enhances solubility and stability, making it suitable for use in aqueous reaction systems.