β-環(huán)糊精的化學(xué)性質(zhì),質(zhì)量標準及用途

白色粉狀結(jié)晶。在分子環(huán)狀結(jié)構(gòu)中有空穴，空穴內(nèi)徑0.7～0.8nm，與各種有機物可生成包埋化合物。
熔點：290-300 °C

96%:


外觀Appearance                      白色結(jié)晶性粉末 
純度Purity                          >96.0% (HPLC)  
比旋度Specific rotation [a]20/D     +159.0 ～ +164.0°(C=1, H2O) (以干基計) 
吸光度Absorbance                    <0.100(15 g/L, 水, 260.0 nm) 
水分Water                           <14.0 % 
鑒別                                呈正反應(yīng)
灼燒殘渣Residue On Ignition         ≤0.1%

備注：96%級別僅作為組織培養(yǎng)基用

98%:

外觀appearance                      white powder
紅外光譜IR spectrum                 Consistent with structure 
純度Purity                          >98.0% (HPLC) 
比旋度Specific rotation [a]20/D     +161.0 ～ +165.0°(C=1, Water) (以干基計)
氨水溶解性solubility                clear colorless to faint yellow solution at 50mg/ml in 1M ammonium hydroxide
水分Water                           <5.0 %


品級Grade                            用于細胞培養(yǎng), ≥98%   
                                  (for cell culture, ≥98%) 
外觀appearance                      white powder
紅外光譜IR spectrum                 Consistent with structure 
氨水溶解性solubility                clear colorless to faint yellow solution at 50mg/ml in 1M ammonium hydroxide 
水分water content by karl fischer   ≤14% (10moles/mole) 
purity by thin layer chromatography ≥98% 
細胞培養(yǎng)測試cell culture test       pass
 

絡(luò)合劑。酶活性研究。組織培養(yǎng)劑。