1.18 Acidic Polysaccharide

• Hyaluronic acid

  • Alternating residues of N-acetyl- β-D-glucosamine and D-glucuronate 
  • Highly viscous and serve as lubricants in the fluid of joints as well as vitreous humor of the eye

  
• Heparin

  • Polysaccharide with 15–90 disaccharide residues per chain
  • Blood anticoagulant