L-???
|
|
L-??? ??
- ???
- 314.5 °C
- ?? ?
- 212.9±23.0 °C(Predicted)
- ??
- 14.5 º (c=10,6N HCl,dry sub.)
- ??
- 1,432 g/cm3
- ?? ??
- 660kg/m3
- FEMA
- 3818 | DL-ALANINE
- ???
- 1.4650 (estimate)
- ?? ??
- 2-8°C
- ???
- H2O: 100 mg/mL
- ??? ??
- ??
- ?? ?? (pKa)
- 2.34(at 25℃)
- ??
- ???? ?? ??
- ??????(pH)
- 5.5-6.5 (100g/l, H2O, 20℃)
- ??
- ?? ??
- ?? ??
- ?? ??
- ???? ??
- synthetic
- optical activity
- [α]20/D +14.0±1°, c = 5% in 5 M HCl
- ???
- 166.5g/L(25℃)
- ?? ??(λmax)
- λ: 260 nm Amax: ≤0.03
λ: 280 nm Amax: ≤0.02
- Merck
- 14,204
- BRN
- 1720248
- ???
- ????. ?? ???? ???? ????.
- InChIKey
- QNAYBMKLOCPYGJ-REOHCLBHSA-N
- LogP
- -0.68
- CAS ??????
- 56-41-7(CAS DataBase Reference)
- NIST
- Alanine(56-41-7)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xi | ||
|---|---|---|---|
| ?? ???? ?? | 36/37/38 | ||
| ????? | 24/25-36-26 | ||
| WGK ?? | 3 | ||
| RTECS ?? | AY2990000 | ||
| F ?????? | 10 | ||
| TSCA | Yes | ||
| ?? ?? | IRRITANT | ||
| HS ?? | 29224995 | ||
| ?? ?? ??? | 56-41-7(Hazardous Substances Data) | ||
| ???? ?? | KE-01567 |
L-??? C??? ??, ??, ??
??
??? ??? ??????? ??? ??? ??? ??? ??.??
???? ????? ????? ??? ???? ??? ?? ????. ??? ?? ??? ?????, ????? ?? ?????, ???? ?? ????, ??? ??????, ?????, ??? ???? ??? ?? ????? ???? ???????, ??? ??? ??????. ???? ??? ??? ??? ??? ??? ?????? ???? ????. ??, ???, ??, ??, ???? ?? ???? ??? ??? ???? ????.??
????????? ????? ??? ??? ???? ??? ???? ??? ???? ?????.????
? (1) ???? : ? ??? ?? ??? ?? 10g? ??? ?? 6N ??? ??? ?? ?? 100mL? ?? ? ?? ???? ??? ?, 
＝+13.5～+15.5°??? ??.
??(2) ? : ? ?? 5.0g? ??? ??????? ?? ?????????????? ?? ??? ?, ? ?? 5.0ppm ????? ??.
??(3) ?? : ? ??? ?????? ?? ??? ?, ? ?? 4.0ppm ????? ??.
??(4) ??? : ? ?? 0.07g? ??? ??????? ?? ??? ?, ? ?? 0.01N ?? 0.2mL? ???? ? ????? ??(0.1% ??).
????
? (1) ? ??? ???(1→1,000) 5mL? ??????(0.2→100) 1mL? ??? 3?? ???? ???? ????.
??(2) ? ?? 0.2g? ? 10mL? ??? ?????? 0.1g? ??? ?? ??? ?? ? ?, ???????? ??? ??.
???
「L-??」? ???? ?? ????.
0.1N ?????? 1mL ＝ 8.909mg C3H7NO2
?????
? ? ??? ?????? 0.2% ????? ??.
??
L-Alanine is a non-essential amino acid. It is produced by direct β-decarboxylation of L-aspartate by L-aspartate β-decarboxylase or transamination of pyruvate in the glucose-alanine cycle and is a precursor for gluconeogenesis. Dysregulation of L-alanine metabolism is associated with various disease states, including diabetes, metabolic syndrome, ketotic hypoglycemia, and acquired acute lactic acidosis.??? ??
White crystalline powder??? ??
pI 6.01, dissociation constants: pK1 2.34, pK2 9.69.??
Natural constituent of protein in plants and animals; found in apple, beef, carob, pea, soybean, wine and zucchini??
L-Alanine plays a vital role in glucose-alanine cycle between tissue and liver. It is used for protein construction as well as involved in the metabolism of tryptophan and vitamin pyridoxine. It provides energy for muscles and central nervous system in order to strengthen the immune system. It helps in the metabolism of sugars and organic acids, and enhances the germination rates of Bacillus subtilis spores. It also displays a cholesterol-reducing effect in animals.?? ??
Anthrobacter oxydans HAP-1 hyper produces DL-alanine in a nongrowth-associated manner.?? ??
L -Alanine is industrially produced from L -aspartic acid by means of immobilized Pseudomonas dacunhae cells in a pressurized bioreactor. An alanine racemase-deficient mutant of Arthro-bacter oxydans was reported, that produces75 g/L L -alanine from glucose with a yield of 52% and 95% e.e. A small amount of L -alanine is still isolated from protein hydrolysates.??
ChEBI: The L-enantiomer of alanine.?? ??
L-Alanine, a non-essential amino acid,?is produced enzymatically from?L-aspartate using aspartate β-decarboxylase.?It is the smallest among all the amino acids.Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
Safety Profile
Mutation data reported. When heated to decomposition it emits toxic fumes of NoxPurification Methods
Crystallise alanine from H2O or aqueous EtOH, i.e. crystallise it from 25% EtOH in water, or recrystallise it from 62.5% EtOH, wash it with EtOH and dry it to constant weight in vacuo over P2O5. [Gutter & Kegeles J Am Chem Soc 75 3893 1953, Walsh J Biol Chem 264 2394 1989.] 2,2'-Iminodipropionic acid is a likely impurity. [Beilstein 4 IV 2480. 2481.]L-??? ?? ?? ? ???
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??-???
Methanol solution
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α-????????
5 KG YEAST EXTRACT SERVABACTERPOWDER
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L-????? ?
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Α-protein
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Conical flask
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L-??? ?? ??
???( 971)?? ??
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