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L-Cysteine

α-Amino-в-mercapto propionic acid, αlpha-Amino-в-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid

品牌
Millipore
CAS
52-90-4
货号
1.02838
规格纯度
for biochemistry
参考价格
757.46 *本价格含增值税费
促销
数量
-+
产品介绍:

产品说明

分析说明

Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0
Identity (IR-spectrum): passes test
Appearance: colorless to white, needle-shaped crystals
Appearance of solution (100 g/l, hydrochloric acid  2 mol/l): clear and colorless
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 1 mol/l, calc.on dried substance): +8.3 to +9.5
pH (25 g/l; CO₂-free water): 4.5 - 5.5
Chloride (Cl): ≤ 0.04 %
Sulfate (SO₄): ≤ 0.03 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0001 %
Ca (Calcium): ≤ 0.001 %
Co (Cobalt): ≤ 0.0005 %
Fe (Iron): ≤ 0.0010 %
K (Potassium): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
NH₄ (Ammonium): ≤ 0.02 %
Zn (Zinc): ≤ 0.0005 %
Foreign amino acids: ≤ 0.5 %
Other ninhydrine positive substances: ≤ 0.1 %
Loss on drying (105 °C; 3 h): ≤ 0.5 %

基本信息

经验(实验)分子式C3H7NO2S
分子量121.16
MDL编号MFCD00064306
EC索引号200-158-2

产品性质

质量水平100
形式solid
自燃温度420 ℃
效能1890 mg/kg LD50, oral (Rat)
pH值(酸碱度)4.5-5.5 (20 ℃, 100 g/L in H2O)
mp220-228 ℃
溶解性 280 g/L
堆积密度300 kg/m3
储存温度2-30℃
InChI1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)
InChI keyXUJNEKJLAYXESH-UHFFFAOYSA-N

安全信息

储存分类代码13 - Non Combustible Solids
WGKWGK 1

Sigma-Aldrich

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