It is an important organic synthesis intermediate, suitable for explosives, pharmaceuticals, synthetic resins, polyethers, cosmetics, tobacco, food and other fields.It is used as a catalyst and stabilizer in reaction units such as esterification, dehydration, alkylation, dealkylation, Beckmann rearrangement, polymerization and depolymerization.In medicine, it is used in the synthesis of doxycycline, dipyridamole, naproxen, and in the production of intermediates for amoxicillin and cefadroxil.It is also applied in epoxy and amino resins, coatings and other fields.