Theophylline

Theophylline
 

Product description:

English name : Theophylline; 13-Dimethyl-26-dioxo-1236-tetrahydropurine; 13-Dimethylxanthine; 37-Dihydro-13-dimethyl-1H-purine-26-dione
Other names : 13- dimethyl xanthine; 26- dioxo -13- dimethyl purine; 37- dihydro-13 -dimethyl -1H- purine -26- dione; 26- dihydroxy -13- dimethyl- purine; dioxo -dimethyl -purine; 13- dimethyl -37- -26- dihydro -1H- purine dione; theophylline
CAS: 58-55-9
C7H8N4O2 = 180.16

Level : BR
Content : ≥98.0%
Chromatographic test : Qualified
Loss on drying : ≤1.0%
Molar absorption coefficient ε / (L / cm`mol): ≥9500
Acidity ( in H + ): ≤4 mmol / 100g
Characters : white crystalline odorless bitter 1g dissolved in 120ml water, 80ml of ethanol, about 110ml of chloroform, soluble in water, alkali hydroxide, ammonia, dilute hydrochloric acid and dilute nitric acid, slightly soluble in ether the melting point of 270 ~. 274 ℃ ( monohydrate) maximum absorption wavelength (0.1mol / L sodium hydroxide ) 274nm. moderately toxic, the median lethal dose (rat, orally ) 300mg / kg
Use: Biochemical studies phosphodiesterase inhibitors.
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