Glucosamine hydrochloride, English name: Glucosamine Hydrochloride， 2-Amino-2-deoxy-D-glucose hydrochloride;Chitosamine hydrochloride；alpha-D-Glucosamine hydrochloride; D(+)Glucosamine, HCl (1.04113); D-Glucosamine HCl; 2-Amino-2-deoxy-D-glucopyranose hydrochloride; Glucosamine HCL; D-Glucosae HCL. CAS no. : 66-84-2, molecular formula: C6H13NO5 HCl, molecular weight of 215.63, Purity: 98.0% or higher.It can promote the synthesis of human glycosaminoglycan, improve joint synovial fluid viscosity, and can improve the metabolism of articular cartilage, conducive to the repair of articular cartilage, has obvious anti-inflammatory and analgesic action. Widely exist in nature.