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L-Histidine

(S)-2-氨基-3-(4-咪唑基)丙酸

品牌
Millipore
CAS
71-00-1
货号
1.04351
规格纯度
for biochemistry
参考价格
662.01 *本价格含增值税费
促销
数量
-+
产品介绍:

产品说明

生化/生理作用

组胺的前体,经组氨酸脱羧酶作用可生成组胺。

分析说明

Assay (acidimetric, calculated on dried substance): 99.0 - 101.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, fine-crystalline powder or colorless crystals
Appearance of solution (50 g/l; water): clear and colorless
Spec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance): +11.4 to +12.4
Chloride (Cl): ≤ 200 ppm
Sulfate (SO₄): ≤ 200 ppm
Heavy metals (as Pb): ≤ 10 ppm
As (Arsenic): ≤ 5 ppm
Ca (Calcium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Fe (Iron): ≤ 5 ppm
K (Potassium): ≤ 5 ppm
Mg (Magnesium): ≤ 5 ppm
Na (Sodium): ≤ 100 ppm
Zn (Zinc): ≤ 5 ppm
Ninhydrin-positive substances (LC)(any ninhydrin-positive impurity): ≤ 0.2 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.02 %
Ninhydrin-positive substances (LC)(total impurities): ≤ 0.5 %
Loss on drying (105 °C; 3 h): ≤ 0.2 %

基本信息

经验(实验)分子式C6H9N3O2
分子量155.15
Beilstein84088
MDL编号MFCD00064315
EC索引号200-745-3

产品性质

质量水平100
形式solid
效能>5110 mg/kg LD50, oral (Rat)
pH值(酸碱度)7.7 (20 ℃, 10 g/L in H2O)
mp282 ℃ (dec.) (lit.)
溶解性 38.2 g/L
堆积密度430 kg/m3
储存温度2-30℃
SMILES stringN[C@@H](Cc1c[nH]cn1)C(O)=O
InChI1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m0/s1
InChI keyHNDVDQJCIGZPNO-YFKPBYRVSA-N

安全信息

储存分类代码11 - Combustible Solids
WGKWGK 1
闪点(F)Not applicable
闪点(C)Not applicable

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