The Mayer laboratory clarified the chemical structure of hyaluronic acid in the 1950 's. Hyaluronic acid is a polymer of polymers. is a high level polysaccharide consisting of D-glucosamine and N-acetyl glucosamine. D-Glucosamine and N-acetyl glucosamine are linked by β-1, 3-sugar, and disaccharide units are connected by β-1, 4-sugar-sweetened bonds. Disaccharide units can be up to 25000. The molecular weight of hyaluronic acid in vivo is from 5,000 to 20 million alpha.
Molecular formula: (C14H21NO11) n