CAS number： 61-90-5
Molecular formula： C6H13NO2
molecular weight： 131.17
Chemical structure：
| Product name | L-Leucine | |
| Shelf life | 2 Years | |
| Item | Specifications | Results |
| Spcciific rotation [a]D20° | +14.9°~+17.3 | +15.5° |
| Loss on drying | ≤0.20% | ≤0.2% |
| Residue on ignition | ≤0.40% | ≤0.1% |
| Chloride (Cl) | ≤0.05% | ＜0.03% |
| Sulfate | ≤0.03% | ＜0.02% |
| Arsenic (AS2O) | ≤1.0PPM | << span="">1ppm |
| Iron (Fe) | ≤30ppm | 15ppm |
| Heavy metals (Pb) | ≤15ppm | ≤5ppm |
| Assay | 98.5~101.5% | 99.8% |
