Lyophilized. Preservative-free, non-sterile. Highly sulfated dextrorotatory mucopolysaccharide with specific anticoagulant properties. Inhibits the IP3-activated Ca2+ channel release of the endoplasmic reticulum. Reported to activate the ryanodine receptor. Note: 1 KU = 1000 units. Activity: ≥160 USP units/mg dry weight.