Items
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Standard
|
Appearance
|
White fine crystals
|
IR Spectrum
|
In accordance with structure
|
Specific Rotation [20/D]
(C=2 in Acetic Acid)
|
-24.0 to -26.0 º
|
Melting Point (℃)
|
79 to 83℃
|
Loss on Drying
|
Not more than 0.50%
|
Related Impurity
|
Not more than 0.1%, Boc-Ala-Ala-OH
|
D-Enantiomer
|
Not more than 0.5%
|
Other Amino Acids
|
Not more than 0.3%
|
Purity (PHLC)
|
Not less than 99.0%
|
外 观 白色结晶粉末
杂 质 ≤0.5%
含 量 ≥98.5%
熔 点 81~83℃
旋 光 -22.0~-24.0°(C=1,AcOH)
水 分 ≤0.5%
|