L-苏氨酸/β-羟基-α-氨基丁酸,≥99.5% (NT)
- 产品编号：T0138
- 中文名称：L-苏氨酸/β-羟基-α-氨基丁酸
- 英文名称：L-Threonine
- 英文别名:(2S,3R)-2-Amino-3-hydroxybutyric acid
- CAS号:72-19-5
- 分子式:C4H9NO3
- 分子量:119.12
- 纯度:≥99.5% (NT)
- EC号:200-774-1
- MDL号:MFCD00064270
订货信息：
产品规格价格(RMB)
- T0138-25G20
- T0138-100G65
- T0138-500G190
性能描述
| 试剂纯度 |
≥99.5% (NT) |
| optical activity |
[α]20/D −28.5±0.5°, c = 5% in H2O |
| impurities |
≤0.5% foreign amino acids |
| ign. residue |
≤0.1% |
| loss |
≤0.1% loss on drying, 20 °C (HV) |
| mp |
256 °C (dec.)(lit.) |
| solubility |
H2O: soluble 50 mg/mL, clear, colorless |
Preparation of threonine-sepharose, assay and purification of protein kinase C1; Amino acid spacing in isotachophoresis on polyacrylamide gel - a critical evaluation2,3; Growth requirement of various microorganisms4.
白色斜方晶系或结晶性粉末。无臭，味微甜。253℃熔化并分解。高温下溶于水，25°C溶解度为20.5g/100ml。等电点为pH6.16。不溶于乙醇、乙醚和氯仿。
|
Test Items项目 |
Specification质量指标 |
|
Assay 含量 |
≥98.5% |
|
Characteristic性状 |
白色结晶或结晶性粉末无臭，味微甜 |
|
Specific rotation[a]D比旋度 |
-26.0°~ -29.0° |
|
Identification 鉴别 |
AS PER CP2010 |
|
PH酸度 |
5.0～6.5 |
|
Transmittance溶液透光率 |
≥98.0% |
|
Chloride氯化物 |
≤0.02% |
|
Sulfate硫酸盐 |
≤0.02% |
|
Ammonium铵盐 |
≤0.02% |
|
Other amino acids其他氨基酸 |
≤0.5% |
|
Loss on drying干燥失重 |
≤0.2% |
|
Residue on ignition炽灼残渣 |
≤0.1% |
|
Iron铁盐 |
≤0.001% |
|
Heavy metals(as Pb)重金属 |
≤10ppm |
|
Arsenic砷盐 |
≤0.0001% |
|
Bacterial endotoxins细菌内毒素 |
≤12EU/g |
