1,3-dimethylxanthine
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English name: Theophylline; 1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydropurine; 1,3-Dimethylxanthine; 3,7-Dihydro-1,3-dimethyl-1H-purine-2 , 6-dione
Other names: 1,3-dimethylxanthine; 2,6-dioxo-1,3-dimethylpurine; 3,7-dihydro-1,3-dimethyl-1H-purine-2, 6-diketone; 2,6-dihydroxy-1,3-dimethylpurine
CAS number: 58-55-9
C7H8N4O2 = 180.16
Level: BR
Content: ≥98.0%
Chromatography test: qualified dry weight loss: ≤1.0%
Molar absorption coefficient ε / (L / cm · mol): ≥9500
Acidity (as H +): ≤4 mmol / 100g
Properties: white crystal. Odorless. Bitter. 1g is soluble in 120ml water, 80ml ethanol, about 110ml chloroform, soluble in hot water, alkaline hydroxide solution, ammonia water, dilute hydrochloric acid and dilute nitric acid, and slightly soluble in ether. Melting point 270 ~ 274 ℃ (monohydrate). Maximum absorption wavelength (0.1mol / L sodium hydroxide) 274nm. Moderately toxic, LD50 (rat, oral) 300mg / kg
Uses: biochemical research. Phosphodiesterase inhibitors.
Save: RT, protect from light
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