外　观：类白色结晶粉末
熔点  183-184 °C(lit.)
储存条件  2-8°C
form  powder
color  white 

A250/A260                              0.6～0.68
A280/A260                              0.67～0.75
比旋光度Specific rotation [a]20/D       -18.4 ～ -18.2 °(C=2, W/V in 0.2N NaOH) 
干燥失重Loss on drying                 ≤0.5%
灼烧残渣Residue On Ignition            ≤0.3%
外观Appearance                          白色结晶粉末
溶液澄清度与色泽Clarity：               无色、澄清
红外光谱鉴别Infrared spectrometry       符合 
纯度Purity (HPLC)                       ≥99.0% (面积归一法) 
含量Assay (UV )：                       98.0%～102.0% (以干品计)
熔点Melting point                       182℃～190℃ 
比值 (abs. max. 267nm,ε=9,780±2%, PH7)：

WGK Germany  3