| Customization: | Available |
|---|---|
| Type: | Leucine |
| Chemical Character: | Neutral |
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Leucine (symbol Leu or L) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a side chain isobutyl group, making it a non-polar aliphatic amino acid. It is essential in humans, meaning the body cannot synthesize it: it must be obtained from the diet. Human dietary sources are foods that contain protein, such as meats, dairy products, soy products, beans and other legumes.
| Item | Specifications | Results |
| Appearance | White crystalline powder | Conforms |
| Specific Rotation[α]20/D | 14.5°~ 16.0° | 15.4° |
| Chloride(CL) | ≤0.05% | <0.05% |
| Sulphate(SO42-) | ≤0.03% | <0.03% |
| Iron(Fe) | ≤30ppm | <30ppm |
| Residue on ignition | ≤0.2% | 0.05% |
| Heavy metal(Pb | ≤15ppm | <15ppm |
| Assay | 98.5%~101.5% | 99.3% |
| Loss on drying | ≤0.30% | 0.14% |
Najin Import and Export (Shandong) Co., Ltd. is a comprehensive, diversified, and comprehensive company with BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, and polyether polyols, polyester polyols, and polymer polyols as its main industrial chains. We have a professional sales team that has won recognition and praise from the industry with exquisite technology, sound administrative management, and good teamwork. The product is sold to multiple domestic and foreign enterprises.
We always adhere to the principle of "quality first, customer first, and reputation first", and are committed to providing customers with the best products. We will also continue to build a professional chemical product supply chain with the highest quality service, best products, and maximum efforts.
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