What are Heteropolysaccharides give examples? Heteropolysaccharides Representative heteropolysaccharides chondroitin-4-sulfate* D-glucuronic acid and N-acetyl-D-galactosamine-4-O-sulfate cartilage heparin* D-glucuronic acid, L-iduronic acid, N-sulfo-D-glucosamine mast cells, blood gamma globulin*