L-Alanine/L-丙氨酸/α-氨基丙酸/L-氨基丙酸/H-Ala-OH,≥99.5% (NT)
- 产品编号：A0139
- 中文名称：L-Alanine/L-丙氨酸/α-氨基丙酸/L-氨基丙酸/H-Ala-OH
- 英文名称：H-Ala-OH~L-2-Aminopropionic acid; Ala; 2-Amino-Propionic Acid
- 英文别名:(S)-2-Aminopropionic acid, L-α-Aminopropionic acid
- CAS号:56-41-7
- 分子式:C3H7NO2
- 分子量:89.09
- 纯度:≥99.5% (NT)
- EC号:200-273-8
- MDL号:MFCD00064410
订货信息：
产品规格价格(RMB)
- A0139-25G30
- A0139-100G90
- A0139-6x100G300
性能描述
| 试剂级别 | 生化试剂，可用于细胞培养 |
| 试剂纯度 | ≥99.5% (NT) |
| optical activity | [α]20/D +14.0±1.0°, c = 5% in 5 M HCl |
| impurities | insoluble matter, passes filter test |
| | ≤0.3% foreign amino acids |
| ign. residue | ≤0.05% |
| loss | ≤0.05% loss on drying, 20 °C (HV) |
| pH | 5.5-7.0 (25 °C, 1 M in H2O) |
| solubility | H2O: soluble1 M at 20 °C, clear, colorless |
| anion traces | chloride (Cl-): ≤50 mg/kg |
| | sulfate (SO42-): ≤50 mg/kg |
Biochem/physiol Actions
Alanine is a nonessential amino acid that plays a key role in the glucose-alanine cycle between muscle tissue and the liver. In amino acid-degrading tissues such as muscle, amino groups are pooled as glutamate by transamination reactions. The amino group of glutamate is transferred to pyruvate via alanine aminotransferase, forming alanine and α-ketoglutarate. The alanine is passed into the blood and transported to the liver. This reaction is reversed in the liver where pyruvate can be used in gluconeogenesis to form glucose, which may return to other tissues through the circulatory system. Increased alanine levels correlate with higher blood pressure, energy intake, cholesterol levels, and body mass index.
中文名称：L-丙氨酸
中文别名:α-氨基丙酸;丙氨酸;L-氨基丙酸;L-初油氨基酸;L-α-丝析氨酸;2-氨基丙酸;α-丙氨酸;L-丙胺酸[1]
英文名称：L-Alanine
英文别名：H-Ala-OH,L-2-Aminopropionic Acid,L-alanine-12C3; 2-Aminopropanoic Acid; H-Ala-OH~L-2-Aminopropionic acid; Ala; 2-Amino-Propionic Acid
L-丙氨酸既可以从生物中直接提取，为左旋物质，也可以由L-天冬氨酸在大肠杆菌变异菌体酶的生物催化下脱羧反应生产L-丙氨酸，副产物为二氧化碳，这也是目前工业化生产L-丙氨酸的主要工艺.
物化性质无色至白色结晶性粉末，无臭。有甜味，甜度约为蔗糖的70%。溶于水，微溶于乙醇，不溶于乙醚。具有旋光性。外消旋型（dl-）氨基丙酸Melting_point295℃（分解），200℃时升华。左旋（l-）-2-氨基丙酸Melting_point297℃（分解）；右旋（d-）体Melting_point295℃（分解）。左旋（l-）体的氢氯化物为棱形结晶体，Melting_point204℃（分解）；左旋（l-）体的N-乙酰基物结晶体Melting_point116℃；其N-苯基物结晶体Melting_point152-154℃。
熔点:314-316℃
溶解性:166.5 g/L (25℃)
