L-Valine
INTRODUCTION:
[Product]: L-VALINE
[Molecular formula]: C5H11NO2
[Molecular weight]: 117.15
[Descriptions]: L- VALINE is white crystal or crystalline powder, odorless, taste slightly sweet and then bitter, soluble in water, nearly insoluble in ethanol.
[Quality standard]: FCC IV,AJI 97,USP24, or at Buyer’s option.
Item | FCC Ⅳ | AJI97 | USP24 |
Content | 98.5~101.5% | 98.5~101.0% | 98.5~105.0% |
PH value | 5.5~7.0 | 5.5~6.5 | 5.5~7.0 |
Specific optical rotation | +26.7o~+29.0 | +27.6o~ +28.7 | +26.6o~+28.8 |
Transmittance | -- | 98.0% MIN | -- |
Chloride | -- | 0.020% MAX | 0.05% MAX |
Ammonium salt | -- | 0.02% MAX | -- |
Sulfate | -- | 0.020% MAX | 0.03% MAX |
Fe | -- | 10ppm MAX | 30ppm MAX |
Heavy metals | 20ppm MAX | 10ppm MAX | 15ppm MAX |
As | -- | 1ppm MAX | 1.5ppm MAX |
Pb | 10ppm MAX | -- | -- |
Other amino acids | -- | 0.5% MAX | -- |
Loss on drying | 0.3% MAX | 0.20% MAX | 0.3% MAX |
Residue on ignition | 0.2% MAX | 0.10% MAX | 0.3% MAX |
[Packing]: Packing in craft paper bags or paperboard barrels of 25kg each. The packaging can also be customized.
[Transportation]:Handle with care, avoid damage on packaging. L-VALINE is non-hazardous chemical. Protect it from sunlight and rains. Keep away from poisonous and harmful substance in transit.
[Storage]:Store in cool, dry, clean and shading environment. Keep it away from poisonous and harmful substances to avoid pollution.
Valine is one of twenty protein amino acids. From a nutritional point of view, valine is also an essential amino acid. Its English name valine is named after valerian, and its Chinese name is also called valine. Its codons are guu, Gua, GUC and GUG. It is a nonpolar amino acid. In sickle cell disease, valine in hemoglobin replaces the hydrophilic amino acid glutamate: because valine is hydrophobic, hemoglobin cannot fold correctly. Valine is completely electrically neutral. When its side chain is also neutral, and the charge generated by its amino and carboxyl groups is just balanced, this molecule is called zwitterion. Food sources rich in valine include white cheese, fish, poultry, cattle, peanuts, sesame seeds and shore beans.It is used in medicine as one of the components of amino acid infusion, and can also be used as a nutritional supplement
IUPAC
(2R)-2-amino-3-methylbutanoic acid