Product Name: Ketoprofen Standard: USP28/ BP2003/EP/JPCAS No.:22071-15-4EC No.: 244-759-8Molecular Formula: C16H14O3Molecular Weight: 254.28Acidity or Alkalinity: PH3-4Loss on drying: not more than 0.5%Assay: 98.5 100.5%Specific Rotation: +1° -1°Melting Point: 92.0oC- 97.0oCResidue on ignition: not more than 0.2%.Appearance: white crystalline powder,OdourlessnessSolubility: practically insoluble in water, freely soluble in acetone, in alcohol and in methylene chloride.Function and Use: It mainly used to treat rheumatoid arthritis, osteoarthritis and other rheumatic diseases.