Dyphylline

White powder or granular;
Odourless, taste bitter.
Soluble in water, slightly soluble in ethanol, slightly dissolved in chloroform or ether use: 2 hydroxypropyl theophylline smooth muscle relaxants, dilated bronchi and the effect of coronary artery, and has diuretic effect.
Stability in the gastric juice.
Flat effect similar to aminophylline, especially suitable for asthma patients with tachycardia.
Chlorine by theophylline and propylene glycol made by condensation in alkaline solution.
Storage conditions: store in an airtight container.
Store in a cool, dry, well-ventilated area, away from incompatible substances