A, Introduction of Mangiferin Name：Mangiferin CAS：4773-96-0 molecular formula：C19H18O11 Molecular weight：422.34 Melting Point：267 ~ 272 ℃ Water solubility: Slightly soluble in water Generalize： 1. Properties: melting point 267 ~ 272 ℃ (decomposition). Optical rotation + 43.3 ° (c = 0.9, pyridine), 32 ° (ethanol). Slightly soluble in methanol, ethanol, water, soluble in hot dilute methanol, hot dilute ethanol, insoluble in non-polar solvents. A Carbonyl glycosides of tetrahydropyrone, double Phenylketone Flavonoids. 2. Pharmacological functions: Mangiferin has inhibition of the central nervous system, anti-inflammatory, antibacterial, anti-HSV-2, gallbladder and immune function, to alleviate HSV-2 virus caused by sacral nerve root disease: the performance of hip or thigh of pain or paresthesia, urinary retention, it is also associated with proctitis, urethritis syndrome. HSV-2 wome