Physical properties: clear needle-like crystal; M.P.: 156-157; 17D: +66.3 degree (C=1.64, chloroform). Plant Source: Artemisia annua L., leaves. Functions and Applications: According to over 2000 clinical case studies, when used for the treatment of tertian fever, it is better than chloroquine in terms of time to suppress the pathogen. No adverse effect in clinical cases. Esp. useful for the treatment of cases resistant to chloroquine. However, the short term recurrance rate is higher than chloroquine. Dosage: according to large amount of clinical study, for the treatment of malaria, use intramuscular injections of 0.3g each time each day for three days, for a total amount of 0.9-1.2g; double first dose for severe case. Sepcification TEST: CP2000 STANDARD Appearance: white color cream crystalline powder Identification: Must positive Related substance: Must qualified Melting point: 150°C -153°C Optitation spelific: +750°+780° Heavy metals: ≤20ppm Sulphated ash: ≤0.1% Loss on drying: ≤0.5% Assay by HPLC: ≥99.0%