Almost-white or light yellow unfixed powder,smell-less,hygroscopic freely.
white unfixed powder,smell-less,hygroscopic freely.
Solubility
Soluble in water very freely,in ethanol or chloroform or ethyl ether hardly.
Conform
Specific optical rotation
+10°－+16°
+11.4°
Identification
(1)The product appears flame reaction of sodium salt.
(2)UV:Max absorption at 225nm wavelength.
(3)IR:Meet the requirements.
Conform
Conform
Meet the requirements.
PH value
6.5-8.0
7.78
Clarity and color of solution
Meet the requirements.
Conform
Related substance
Max single impurity≤0.1%
0.08%
Total impurity≤1.0%
0.3%
Optical isomer
≤0.500%
0.13%
Heavy Metal
<20ppm
Conforms
ethanol
Dichloromethane ethyl acetate
DMF
≤0.500%
≤0.060%
≤0.500%
≤0.088%
0.005%
0.003%
0.001%
0.004%
Water
19.5%~22.5%
20.5%
Assay
Not less than 98.50%,calculated on the anhydrous basis.
99.7%
Payment
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