


L-Leucine
L-Leucine (98% HPLC, USP33) is a key branched-chain amino acid (BCAA) that drives muscle protein synthesis and recovery. Pharma-grade white powder for sports nutrition and dietary supplements.
| 规格名称 | 规格值 |
|---|---|
| Appearance | White crystals or crystalline powder |
| Assay | 98%HPLC |
| CAS No. | 61-90-5 |
| Shelf Life | 24 months |
| Stock | Regular storage |
L-Leucine
L-Leucine Details
Specification: 98%HPLC
Molecular formula: C6H13NO2
Packing: 25kg/drum
Storage: Stored in closed containers in a cool, dry, well-ventilated area.
What is L-Leucine?
L-leucine is an essential amino acid with the molecular formula $C_6H_{13}NO_2$, and it is classified as one of the branched-chain amino acids (BCAAs). At room temperature, it appears as white crystals or powder with a slightly bitter taste. Melting point is 293–295°C, slightly soluble in ethanol, and is insoluble in ether. In living organisms, it is synthesized under the catalysis of acetohydroxyacid synthase (AHAS). Leucine also acts as a signaling molecule, participating in the regulation of various physiological activities.
L-Leucine Specification:
| Testing Item | Specification |
|---|---|
| Appearance | White crystals or crystalline powder |
| Assay | 98.5%~101.5% |
| Specific rotation | +14.9°~+17.3° |
| PH | 5.5-7.0 |
| Loss on drying(%) | ≤ 0.2% |
| Residue on ignition(%) | ≤ 0.4% |
| Chloride(%) | ≤ 0.05% |
| Sulfate(%) | ≤ 0.03% |
| Heavy Metals | ≤ 15ppm |
| Iron(Fe) | ≤ 0.003% |
| Chromatographic purity | As per USP33 |
Recommand Applications of L-Leucine.
1. Nutritional Supplement: Widely used as a dietary enhancer, particularly in bread and flour-based products.
2. Medical Preparations: Used in the formulation of amino acid intravenous infusions and comprehensive amino acid preparations.
3. Pharmaceutical & Agricultural: Utilized as a hypoglycemic agent and as a plant growth promoter.
4. Flavor Enhancement: Acts as a spice or flavoring agent to improve the overall sensory profile of food products.



