CAS RN: 81262-93-3 QUALITY STANDARD: CP 1. Characters: A white or off-white crystal powder, scentless, bitter taste, Melting point: 193-198, decompunding after fusing, sparingly soluble in water or methanol, slightly soluble in ethanol, insoluble in ether. 2. Uses: It is used into preventing asthma, anti inflammation, anti irritability and mainly applied in clinic for bronchial asthma, bronchitis and chronic chocking pulmonary diseases and acute bronchitis. 3. Storage: It should be kept away from light, stored in sealed containers. 4. Packing: 50g/package.