Theophylline CAS 58-55-9 is an organic compound with the chemical formula C7H8N4O2, which can reduce the tension of smooth muscles and dilate the respiratory tract; Can promote the release of endogenous adrenaline and norepinephrine, and relax airway smooth muscle; Inhibiting the release of calcium ions from the smooth muscle endoplasmic reticulum, reducing intracellular calcium ion concentration and causing respiratory dilation. Theophylline has a strong relaxation effect on smooth muscle, but it is not as effective as theophylline β Receptor agonists.

Chinese name: Theophylline

Foreign name: Theophylline

Chemical formula: C7H8N4O2

Molecular weight: 180.164

CAS login number: 58-55-9

EINECS login number: 200-385-7

Melting point: 271 to 273 ℃

Boiling point: 454.1 ℃

Physical and chemical properties

Density: 1.465g/cm3

Melting point: 271-273 ° C

Boiling point: 454.1 º C

Flash point: 11 ° C

Refractive index: 1.737

Appearance: White crystalline powder

Solubility: Soluble in hot water, alkali hydroxide solution, ammonia, dilute hydrochloric acid, and dilute nitric acid, slightly soluble in ether

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