| 质量标准： | 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 210℃～217℃
比值 (abs. max. 280nm,ε=13,000±2%, PH1)：
A250/A260 0.41～0.49
A280/A260 2.05～2.15
比旋光度Specific rotation [a]20/D +29 ～ +33 °(C=9, W/V in NaOH)
干燥失重Loss on drying ≤0.5%
灼烧残渣Residue On Ignition ≤0.1%
重金属Heavy Metals(as pb)： ≤10ppm
透明度Transmittance ≥98.0%(430nm, C=1, W/V, in H2O)
品级Grade 细胞培养级
(for cell culture, powder, ≥99%)
外观Appearance 白色至类白色粉末
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity ≥99.0% (HPLC)
水溶解试验solubility in water 200mg/4ml in water
UV/VIS Spectrum EMM=12.8 ～ 13.3
at λ MAX279-280 at PH1.0
细胞培养测试Cell culture test pass
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