|Molecular Formula: ||C7H8N4O2|
|Molecular Weight: ||180.2|
|CAS No.: ||58-55-9|
Theophylline is a white or almost white, crystalline powder. It is slightly soluble in water, sparingly soluble in ethanol (96 per cent). It dissolves in solutions of alkali hydroxides, in ammonia and in mineral acids.
Non-selective phosphodiesterase inhibitor (xanthine); treatment of reversible airways obstruction.
|Appearance||White or almost white, crystalline powder.|
|Melting point||270 °C to 274 °C|
|Appearance of solution||Meets the requirements.|
|Acidity||Meets the requirements.|
|Heavy metals||≤20 ppm|
|Loss on drying||≤0.5%|
|Any other impurity||≤0.1%|
|Total impurities ||≤0.5%|
Packing and Storage
Preserve in well-closed containers.