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|Grade:||Pharmaceutical Grade||Usage:||Bronchial And Cardiogenic Asthma|
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CAS 58 55 9 Pharmaceutical Raw Materials Theophylline For Bronchial Cardiogenic Asthma
Synonyms: Theophylline anhydrous; 1,3-dimethyl-3,4,5,7-tetrahydro-1H-purine-2,6-dione; dimethylxanthine; ANHYDROUS THEOPHYLLINE
Melting Point: 270-274℃
Boiling Point: 390.1°C at 760 mmHg
Flash Point: 189.7°C
Solubility:H2O: 8.3 g/L (20℃)
Appearance: white crystals
Storage: ventilating and drying
Relaxing bronchial smooth muscle;
Increasing heart muscle contractility and efficiency; as a positive inotrope;
Increasing heart rate: (positive chronotropic);
Increasing blood pressure;
Increasing renal blood flow;
Central nervous system stimulatory effect mainly on the medullary respiratory center.
It can reduce the tension of smooth muscle, dilate the airway; promote the release of endogenous adrenaline and norepinephrine, relax the airway smooth muscle; inhibit the release of calcium ions from the smooth muscle endoplasmic reticulum, reduce the intracellular calcium concentration and produce airway dilation . Theophylline has a stronger relaxing effect on smooth muscle but less than a beta agonist.
1. For bronchial asthma, acute bronchitis, asthmatic bronchitis, obstructive emphysema, etc., to relieve wheezing symptoms. Also suitable for symptoms of bronchospasm associated with chronic bronchitis and emphysema.
2. Can be used for patients with cardiogenic asthma, cardiogenic edema and acute cardiac insufficiency.
3. Can also be used for patients with biliary colic.
This product should be taken after meals to reduce gastrointestinal irritation; smoking, chronic alcoholism and induction of liver drug enzymes can reduce the plasma concentration of theophylline, theophylline dose needs to be appropriately increased. Theophylline can cause arrhythmia, worsening the original arrhythmia, and any changes in the patient's heart rate or heart rate should be closely watched.
When the theophylline is injected intravenously or the plasma concentration of theophylline is higher than 20 μg/ml, toxicity may occur, which may be arrhythmia, increased heart rate, muscle fibrillation, epilepsy, transient hypotension or peripheral circulatory failure. When the concentration of theophylline is higher than 40μg/ml, fever, water loss, convulsions, etc. may occur, and severe cases may cause death due to respiratory and cardiac arrest, and pre-treatment of sedatives can be effectively prevented.
Cetificate of Analysis
|CAS No.||58-55-9||Outer Packing||25KGS|
|Production date||2018.03.03||Shelf life||2022.03.02|
|Items of analysis||Specification||Results|
|Appearance||White Crystalline Powder||Conforms|
|Acidity||50ml solution S consumption 0.02mol / NaOH ≤ 1ml||Conforms|
|Appearance of the solution||Clarified colorless||Conforms|
|Relative substance||Impurities ABCD are less than 01%; other impurities are less than 0.1%; total impurities are less than 0.5%||Conforms|
|Loss on drying||≤0.5%||0.13%|
Theophylline is a smooth muscle relaxant used chiefly for its bronchodilator effect, treating of chronic obstructive pulmonary emphysema(COPD), bronchial asthma, chronic bronchitis and bronchospastic distress.
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