Xanthine

CAS No.: 69-89-6

C5H4N4O2=152.11

Grade: high purity grade

Content: ≥ 98.0%

Heavy metal: ≤ 10ppm

Physicochemical properties : off white to yellowish powder or white flake or flake crystal. At 16 ℃, 1g is dissolved in 14.5l water, dissolved in 1.4L boiling water, easily soluble in ammonia water and sodium hydroxide solution, slightly soluble in ethanol, insoluble in organic solvents, heated and decomposed without melting point, and partially sublimated. The maximum absorption wavelength is 267nm at pH 6, ε 10250, minimum absorption wavelength 240nm, absorbance ratio A250 / a260 = 0.57, A280 / a260 = 0.61, A290 / a260 = 0.07. At pH 10, the maximum absorption wavelength is 277.5nm and 240.5nm, the molar absorption coefficient is 9300 and 8900, the minimum absorption wavelength is 257nm, and the absorbance ratio A250 / a260 = 1.29, A280 / a260 = 1.71, A290 / a260 = 0.92. LD50 (mouse, abdominal cavity) 500mg / kg

Purpose: biochemical research. Organic synthesis.

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