heparin chemistry and source Sulfated mucopolysaccharides large amount of negative charge strong acidity Characteristics administrated by i.v.or s.c. effective both in vivo and in vitro quick onset and potent effects anticoagulant activity is related to the length of molecular chainheparin chemistry and source Sulfated mucopolysaccharides large amount of negative charge strong acidity Characteristics • administrated by i.v. or s.c. • effective both in vivo and in vitro • quick onset and potent effects • anticoagulant activity is related to the length of molecular chain