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L-半胱氨酸盐酸盐一水物
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更新时间:2016-06-10  |  阅读:1112

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L-半胱氨酸盐酸盐一水物
L-Cysteine hydrochloride monohydrate
Cas 号: 【7048-04-6】 M D L: MFCD00065606
L-半胱氨酸盐酸盐一水物分子式: C3H8ClNO2S.H2O;C3H7NO2S•HCl•H2O 分子量: 175.64
别 名: (R)-2-氨基-3-巯基丙酸盐酸盐,L-盐酸半胱氨酸一水物,盐酸半胱氨酸
H-Cys-OH.HCl
99% 25g
99% 100g
99% 500g
性 状: 白色结晶体或结晶粉末。有吸湿性。在空气中缓慢氧化和分解。溶于水、乙醇和丙酮。水溶液呈酸性。半数致死量(小鼠,腹腔)1250mg/kg。
熔点:175~178℃(分解)
[α]20D 6.0 ° (C=8.00, 1mol/L HCl)
质量标准: 含量Assay 99.0~100.5% (T)
pH 1.5~2.0
比旋光度 Specific rotation[a]D20 +5.5°~+7.0°
水溶性State of solution 无色透明
透光率(Transmittance T430) ≥98.0%
氯Chloride(Cl) 19.89~20.29%
铵根Ammonium(NH4) ≤0.02%
铁Iron(Fe) ≤10ppm
重金属Heavy metals(Pb) ≤10ppm
砷Arsenic(As2o3) ≤ 1ppm
其它氨基酸Other amino acids 色析法不可检出
干燥失重Loss on drying 8.5~12.0%
灼烧残渣Residue on ignition ≤0.10%
贮 存: 密封阴凉干燥避光保存。
用途 生化研究。钢铁原材料中的钙、镁测定。测定溶血素的还原剂。厌氧菌的生长培养和计数。 L-Cysteine Hydrochloride Monohydrate
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