Molecular Formula: C6H13NO2
Molecular Weight: 131.17
CAS No： 61-90-5
| L-Leucine (ferment) | CP2020 | EP11 | USP2023 | AJI92 |
| Assay | ≥98.5% | 98.5-101.0% | 98.5-101.5% | 99.0-100.5% |
| PH | 5.5-6.5 | / | 5.5-7.0 | 5.5-6.5 |
| Specific rotation[a]D20 | +14.9°-+16.0° | +14.5°-+16.5° | / | +14.9°-+16.0° |
| Specific rotation[a]D25 | / | / | +14.9°-+17.3° | / |
| Transmittance(T430) | ≥98.0% | / | / | ≥98.0% |
| Appearance of solution | / | clear & colorless ≤BY6 | / | / |
| Chloride(Cl) | ≤0.02% | ≤0.02% | ≤0.05% | ≤0.02% |
| Ammonium(NH4) | ≤0.02% | ≤0.02% | / | ≤0.02% |
| Sulfate(SO4) | ≤0.02% | ≤0.03% | ≤0.03% | ≤0.02% |
| Iron(Fe) | ≤10PPM | ≤10PPM | ≤30PPM | ≤10PPM |
| Heavy metals(Pb) | ≤10PPM | / | / | ≤10PPM |
| Arsenic | ≤1PPM | / | / | ≤1PPM |
| Other amino acids | ≤0.5% | / | Individual impurities≤0.5% Total impurities≤2.0% | conforms |
| Ninhydrin-positive substances | / | Impurity A at 570 nm≤0.8% Each impruity ≤0.2% Total ≤1.0% | / | / |
| Loss on drying | ≤0.20% | ≤0.50% | ≤0.2% | ≤0.20% |
| Residue on ignition | ≤0.10% | ≤0.10% | ≤0.4% | ≤0.10% |
| Total plate count | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g |
| Moulds & Yeasts | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g |
| Pathogenic Bacterium | Cronobacter spp /Enterobacteriaceae /Salmonella /Bacillus cereus /Sulphite-reducing clostridia(SRC) （Can be tested upon request） | |||
Return to list
Contact us