Procaterol Hydrochloride Hemihydrate 1. CAS RN: 81262-93-3 2. Structural Formula: 3. Molecular formula & molecular weight: C16H22N2O3•HCL•1/2H20 335.83 4. Characters: It’s a white or off-white crystal powder, scentless, bitter taste, sparingly soluble in water or methanol, slightly soluble in ethanol, insoluble in ether. 5. Quality Standard: CP2005. Identification 1. Positive reaction 2. Ultraviolet-visible Spectrophotometers: the maximal absorption in 295nm, 259nm, and 234nm. 3. Infrared Spectrophotometry: exhibit similar intensities of absorption at the same wave numbers with Reference Sprectrum. 4. Reaction of chloride pH (C: 1% water) 4.0-5.0 Mp 193~198℃ Clarity of solution According to CP test Related substances (By HPLC) Comply with the Reference Standard. (Total impurities is not more than 0.5%) Moisture by K. Pischer Between 2.5％ and 3.3％ Residue on ignition Not more than 0.1% Heavy metals Not more than 10ppm Arsenic Not more than 0.0002% Assay Not less than 98.5％,calculated with reference to the dried substances. 6. Usage: It is used into preventing asthma, anti inflammation, anti-irritability, and mainly applied in clinic for bronchial asthma, bronchitis and chronic choking pulmonary diseases and acute bronchitis 7. Storage: It should be kept away from light, stored in sealed containers. 8. Packing: 50 g/package. 9. HS CODE: 2914 5000