FDA approved this drug for using in the kidney transplantation after phase I, II,III wide clinical trail in 1995. It is also proved effective for heart, lung, andliver transplantation in addition to kidney transplantation. It prevents pathologicalchanges of the transplanted organ. It is also proved effective in treatmentof autoimmune disease such as systemic lupus erythematosus. CAS No.: 128794-94-5Appearance: White crystalline powderMolecular Formula: C23H31NO7Loss on drying: 0.5% max.Heavy Metals: 20ppm max. Content: 98~102%25kg/carton drum producing area:China supplying capacity:1000kg/month