Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. It serves as a building block for cross-linking agents and functionalized polymers due to the reactivity of its chloromethyl groups. Commonly employed in the preparation of ligands for catalysis, particularly in transition metal complexes. Also utilized in the development of ion-selective sensors and specialty resins for separation technologies. Its hydrochloride form enhances solubility and stability in aqueous reaction systems, making it suitable for use in controlled synthetic pathways.