n-acetylglucosamine molecular structure 3d, flat model, glcnac, structural chemical formula view from a microscope

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 flat structural view from microscope microscope