Milk Thistle Dry Extract , Extract Cardui Mariae, Silymarin Standard: USP, EP, DAB Specification: Silymarin by acetone DAB 10 80%UV, Silybin+isosilybin 30%, silybin 30%; Silymarin by ethylacetate 80%UV, 40% HPLC; Silymarin by ethanol 70%UV 80%UV; Water soluble silymarin 20% 40% 45% UV; Silybin 80%~97% HPLC. CAS NO.: 65666-07-1 Structure: Molecular Formula: C25H22O10 Molecular weight: 482.44 Amorphous Powder, Yellow to Yellowish-Brown Color, Slight and Specific Odour, Bitter in taste. Plant: Silybum Marianum (L.) Gaertn., Milk Thistle, Mariendiestel Used part: Seeds Solvent: Ethyl acetate and Acetone Silymarin is a kind of flavone and lignanoid compound . The main ingredients are: Silybin, Isosilybin, Silydianin, Silychristin, etc. It has the efficacy of liver protecting, improve the function of liver, promote biliation and diminishliver inflammation. As a kind of better antioxidant, it can clearing free radical in human body, postpone senility. Silymarin can protect the liver from damage of alcohol, chemical toxicant, drug, food poison, environmental pollution; Accelerate liver  cell regenerating and repairing. So it is called "The natural liver-protection drug". In addition, Silymarin has the function of radiation hardening, arteriosclerosis preventing, skin-aging delaying. It is widely used in drug, health products, food and cosmetics.