– 4,5-Dicaffeoylquinic acid ( Isochlorogenic acid C) possesses potent hepatoprotective and anti-HBV effects.IC50 value:Target: Anti-hepatitis natural produce.In vitro: To study anti-hepatitis effect of isochlorogenic acid C, anti-apoptotic and anti-injury properties of test compound were evaluated. The results showed that test compound at concentrations of 10 to 100 ?g/ml significantly reduced the caspase-3 and transformed growth factor ?1 (TGF?1) levels of the D-GalN-challenged hepatocytes. Also, test compound improved markedly cell viability of the D-GalN-injured hepatocytes and produced a maximum protection rate of 47.28% at a concentration of 100 ?g/ml. Furthermore, test compound significantly inhibited productions of HBsAg and HBeAg. Its maximum inhibitory rates on the HBsAg and HBeAg expressions were 86.93 and 59.79%, respectively. In addition, test compound significantly induced the HO-1 expression of HepG2.2.15 cells [1]. In vivo: