質(zhì)量標(biāo)準(zhǔn): |
99%: 外觀Appearance 白色至淺黃色粉末 紅外光譜鑒定Infrared spectrometry 和對(duì)照品匹配 純度Purity ≥99.0% (HPLC) 水溶性實(shí)驗(yàn)Solubility in hot Water 溶液透明 比旋光度Specific rotation [a]20/D -72.0 ~-78.0 °(C=1,1mol/L NaOH) 干燥失重Loss on drying <5 % 重金屬Heavy metals (as Pb) <10 ppm 吸光度Ratio of Absorbances 0.91 - 0.97 (A250/A260) 0.67 - 0.71 (A280/A260) 透光率Transmittance >95 % (c=1, 1 N NaOH, 430 nm) 1 cm cell 99.5%,用于細(xì)胞培養(yǎng):
外觀Appearance 白色至類白色粉末 紅外光譜鑒定Infrared spectrometry 和對(duì)照品匹配 純度Purity >99.5% (HPLC) 水溶性實(shí)驗(yàn)Solubility in hot Water 溶液透明 比旋光度Specific rotation [a]20/D -72.0 ~-78.0 °(C=1,1mol/L NaOH) 水分Water ≤14 % (by Karl Fischer) EmM 13.2 - 13.9 At λ Max 252 ~ 253 nm at pH 7.0 λ 252 - 253 nm 細(xì)胞培養(yǎng)實(shí)驗(yàn)Cell Culture Test Pass |