Hesperidin CAS No:520-26-3 Test Method: HPLC Molecular Formula:C28H34O15 Molecular Weight:610.55 Melting Point: 258~262℃ Specific Rotation:-74?～78 ?(c=2,pyridine) Properties : Yellowish or almost White crystalline powder.Insoluble in water, Slightly Soluble in methanol,Pratically soluble in dilute alkali aqueous solution Hesperidin is a flavonoid glycoside (C28H34O15) found abundantly in citrus fruits. Its aglycone form is called hesperetin. Hesperidin is believed to play a role in plant defense. It acts as an antioxidant according to in vitro studies . In human nutrition it contributes to the integrity of the blood vessels. Various preliminary studies reveal novel pharmaceutical properties. Heperidin reduced cholesterol and blood pressure in rats. In a mouse study large doses of the glucoside hesperidin decreased bone density loss. Another animal study showed protective effects against sepsis. Hesperitin has anti-inflammatory effects. Some in vitro results applied only to the aglucone form. Hesperitin also showed the ability to penetrate the blood brain barrier in an in vitro model.