L-Leucine
Amino Acids 2025-03-02
L-LEUCINE
CAS No.: 61-90-5
Molecular Formula: C₆H₁₃NO₂
Molecular Weight: 131.17 g/mol
1. DESCRIPTION
- Appearance: White or almost white crystalline powder/flakes
- Solubility:
- 1 g dissolves in ~40 mL water
- 1 g dissolves in ~100 mL glacial acetic acid
- Sparingly soluble in alcohol
- Soluble in dilute HCl, alkali hydroxides, and carbonates
2. SPECIFICATIONS
| Parameter | Standard Value |
|---|---|
| Appearance of Solution | Clear; ≤ reference solution BY6 |
| Assay | 98.5%–101.0% |
| Specific Optical Rotation | +14.5° to +16.5° |
| Ninhydrin-Positive Impurities | ≤0.5% (any single impurity) |
| Chloride (Cl) | ≤0.02% |
| Sulfate (SO₄) | ≤0.03% |
| Ammonium (NH₄) | ≤0.02% |
| Iron (Fe) | ≤10 ppm |
| Heavy Metals | ≤10 ppm |
| Lead (Pb) | ≤5 ppm |
| Loss on Drying | ≤0.5% |
| Residue on Ignition | ≤0.1% |
3. APPLICATIONS
- Nutritional Supplement:
- Muscle repair (with L-Isoleucine & L-Valine).
- Blood sugar control and energy provision.
- Medical Uses:
- Post-surgical recovery (bone, skin, muscle healing).
- Prevents muscle loss in athletes/bodybuilders.
- Industrial:
- Amino acid infusions, hypoglycemic agents, plant growth promoters.
4. PACKAGING & STORAGE
- Packaging: 25 kg/drum (or custom requirements).
- Storage: Cool, dry place; protect from light.
5. SAFETY & REGULATORY
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