The sodium salt of Hyaluronic acid is a glycosaminoglycan found in many organs where it functions as a joint lubricant and shock absorber.
It is obtained principally from synovial fluid, vitreous humor of the eye, umbilical tissue and cocks comb.The chemical structure of hyaluronic is a disaccharide repeat of β-(1,3) glucuronic acid and β-(1,4) N-acetyl glucosamine.