更新時間:2016-06-11
L-半胱氨酸,關于產(chǎn)品的Cas號、分子式、分子量、性狀、熔點等化學及物理性質(zhì),貯存、用途等具體信息,可向我們生化試劑專業(yè)銷售人員索取,紙質(zhì)說明書,我們隨貨發(fā)出。
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L-半胱氨酸
L-Cysteine
Cas 號: 【52-90-4 】 M D L: MFCD00064306
L-半胱氨酸分子式: C3H7NO2S;HSCH2CH(NH2)CO2H 分子量: 121.16
別 名: L-半膀胱氨基酸,L-2-氨基-3-巰基丙酸
(R)-2-Amino-3-mercaptopropionic acid
99% 25g
99% 100g
99% 500g
性 狀: 無色結(jié)晶。其中性或微堿性水溶液能被空氣氧化成胱氨酸,酸性溶液較為穩(wěn)定。水中溶解度:280 g/L (25°C),溶于醇,不溶于苯、丙酮、乙酸乙酯、二硫化碳。有刺激
[α]20D 8.8 ° (C=8.00, 1mol/L HCl)
質(zhì)量標準: 99%,來源,動物毛發(fā):
外觀Appearance 白色或無色結(jié)晶
紅外光譜鑒別Infrared spectrometry 和對照品匹配
純度Purity >99.0 %(碘量滴定)
水溶解試驗Solubility in Water 溶液透明
干燥失重Loss on drying <0.5 % (105°C, 3 hrs)
重金屬Heavy metals (as Pb) <10 ppm
比旋度Specific rotation [a]20/D +8.2° ~ +9.4°(c=5, 2 N HCl)
Cl < 300 ppm
SO4 < 200 ppm
NH4 < 500 ppm
pH 4.5 - 6 (2.5% 水溶液)
來源Origin 動物毛發(fā)
品級Grade 非動物源,用于細胞培養(yǎng)
(≥98%, from non-animal source, suitable for cell culture)
外觀Appearance 白色結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry Conforms
干燥損失Loss on Drying ≤0.50 %
灼燒殘渣Residue on ignition (Ash) ≤0.05 %
內(nèi)毒素Endotoxin Level ≤1 EU/mg
細胞培養(yǎng)測試Cell Culture Test Pass
比旋光度Specific rotation [a]20/D 8.0 - 9.5 ° (C = 8 in 1 M HCl)
氯Chloride ≤0.04 %
鐵Iron ≤10.0 ppm
重金屬Heavy metals ≤10.0 ppm
銨Ammonium ≤300.0 ppm
砷Arsenic ≤1 ppm
茚三酮陽性物質(zhì)Ninhydrin positive substances (each) ≤0.5 %
含量Assay 98.0 - 101.0 %
水溶解試驗Solubility in water at 20 °C 280 g/l
pH 4.5 - 6
來源Origin 發(fā)酵
貯 存: 密封干燥避光保存。
用途 生化及營養(yǎng)研究,制備組織培養(yǎng)基。醫(yī)藥上用作肝炎、肝中毒、銻劑中毒、放射性藥物中毒等的解毒劑。
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