n-acetylglucosamine molecule 3d, molecular structure, ball and stick model, structural chemical formula derivative monosaccharide

nacetylglucosamine glcnac derivative monosaccharide glucose molecule molecular structure chemical formula model c8h15no6 atom acid chitin nag cartilage sugar supplement dietary chemistry joint crustacean glucosamine hyaluronan osteoarthritis carbon science amino sulfate carbohydrate additive acetylglucosamine proteoglycan cosmetic atomic illustration monomer arthritis bond laboratory medicine cycle hydrogen compound acetic antiinflammatory n-acetylglucosamine ball stick structural glucose