Specification :

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