更新時間:2016-05-30
L-脯氨酸,公司新批次、批號生化試劑出貨了,公司現(xiàn)貨直銷,*直供,公司不同規(guī)格、多種純度供應(yīng)!
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L-脯氨酸
L-Proline
Cas 號: 【147-85-3】 M D L: MFCD00064318
L-脯氨酸分子式: C5H9NO2 分子量: 115.13
別 名: L-氫化吡咯甲酸
(S)-Pyrrolidine-2-carboxylic acid
L(-)-Proline
H-Pro-OH
99% 25g
99% 100g
99% 500g
99% 1kg
性 狀: 無色針狀或斜方結(jié)晶。無氣味。微有甜味。有吸濕性。與水合茚三酮反應(yīng)呈,被冰乙酸酸化后則顯紅色。易溶于水和乙醇、丁醇和異丙醇,溶于無機酸。
。水中溶解度:1623g/L (25°C),乙醇溶解度: 67g/100mL (19°C)。
熔點: 228-233 °C
[a]20/D: -85.5° (c=4, H2O)
質(zhì)量標(biāo)準(zhǔn): 外觀Appearance 白色結(jié)晶或結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry 和對照品匹配
純度Purity 99.0 - 101.0 %
干燥損失Loss on drying <0.3 % (105°C, 3 小時)
重金屬Heavy metals (as Pb) <10 ppm
其它氨基酸Other amino acids <0.5 % (TLC)
比旋度Specific rotation [a]20/D -84.5°~ -86.8°(c=4, H2O)
痕量分析Trace analysis :
氯Cl < 200 ppm
砷As < 1 ppm
氨基NH4 < 200 ppm
鐵Fe < 10 ppm
透光度Transmittance >95 % (c=10, H2O, 430 nm) 1 cm cell
pH 5.5 ~ 7 (2.5% 溶液, 25°C)
貯 存: 密封避光保存
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