Theophylline 58-55-9 [email protected]

3.jpg Theophylline is a drug, a phosphodiesterase (PDE) inhibitor, it is widely used in the treatment of respiratory diseases. It has a similar structure with caffeine and pharmacological properties. Theophylline can be found in the nature of black tea and green tea. Functions 10.jpg Theophylline is used to prevent and treat wheezing, shortness of breath, and chest tightness caused by asthma, chronic bronchitis, emphysema, and other lung diseases. It relaxes and opens air passages in the lungs, making it easier to breathe. Analysis 5.jpg Item Specifications Results Description White crystal, soluble in water and alcohol White crystal Appearance Clear and colorless(35%in water) Pass test Content ≥99.5% 99.68% NH4CI ≤0.2% 0.09% Water content ≤0.3% 0.23% Ash ≤0.1% 0.071% Solubility test(in water) Passes test Pass test Melting point 118~121℃ 119.2℃ PH(11.8% in water) 5~7 6.5 A(280nm)35% in water ≤0.4 0.192 A(260nm) 55% in water ≤0.2 0.059 Iron(Fe) ≤0.1ppm Pass test Conclusion The results conforms with enterprise standards Real Shot 4.jpg 2_meitu_1.jpg