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Property: white crystal powder, tastes sweet firstly and bitter then, is soluble in water and hardly soluble in ethanol
Appearance: White Crystals Powder
Cas No.: 72-18-4
EINECS No.: 200-773-6
Molecular Formula:C5H11NO2
Molecular Weight: 117.15
Specification:
Item | AJI92 | USP24 |
Assay | 98.5~101.0% | 98.5~101.5% |
pH | 5.5~6.5 | 5.5~7.0 |
Specific rotation[a]D020 | +27.6~+28.7 | |
[a]D025 | +26.6~+28.8 | |
Transmittance(T430) | ≥98.0% | |
Chloride(Cl) | ≤0.02% | ≤0.05% |
Ammonium(NH4) | ≤0.020% | |
Sulfate(SO4) | ≤0.02% | ≤0.03% |
Iron(Fe) | ≤10ppm | ≤30ppm |
Heavy metals(Pb) | ≤10ppm | ≤15ppm |
Arsenic | ≤1 ppm | ≤1.5ppm |
Other amino acids | ≤0.5% | |
Ninhydrin-positive substances | ||
Loss on drying | ≤0.2% | ≤0.3% |
Residue on ignition | ≤0.1% | ≤0.1% |
Organic volatile impurities | Conforms | |
Endotoxin |
Storage Condition:Preserve in well-closed,container,store in cool, dry place.
Package: 25kg/drum
Application: As an essential amino acids, L-valine is widely used as nutritional supplement and drug for the treatment of hepatic failure, disturbance of central nervous system. It is also widely used as chiral source in organic synthesis and a building block in pharmaceutical products. With utmost purity, L-valine can be used in the production of pharmaceutical products and protected intermediates such L-valine methyl ester hydrochloride, Cbz-L-valine, Boc-L-valine.
Copyright 2016 Zhengzhou Friend Biological Engineering Co., Ltd.
