| L-異亮氨酸 | CP2020 | EP11 | USP2023 | FCC11 |
| 含量 | ≥98.5% | 98.5-101.0% | 98.5-101.5% | 98.5～101.5% |
| 酸度 | 5.5-6.5 | / | 5.5-7.0 | 5.5-7.0 |
| 比旋度[a]D20 | +38.9°-+41.8° | +40.0-+43.0 | / | +38.6～+41.5° |
| 比旋度[a]D25 | / | / | +38.9°-+41.8° | +38.2～+41.1° |
| 透光 | ≥98.0% | / | / | / |
| 溶液外觀 | / | clear & colorless ≤BY6 | / | / |
| 氯化物 | ≤0.02% | ≤0.02% | ≤0.05% | / |
| 銨鹽 | ≤0.02% | ≤0.02% | / | / |
| 硫酸鹽 | ≤0.02% | ≤0.03% | ≤0.03% | / |
| 鐵鹽 | ≤10PPM | ≤10PPM | ≤30PPM | / |
| 重金屬 | ≤10PPM | / | / | / |
| 砷鹽 | ≤1PPM | / | / | / |
| 鉛 | / | / | / | ≤ 5 ppm |
| 其他氨基酸 | ≤0.5% | / | Individual impurities≤0.5% Total impurities≤2.0% | / |
| 茚三酮活性物質(zhì) | / | Impurities A and C at 570 nm≤ 0.3% Each impruity ≤0.2% Total ≤1.0% | / | / |
| 干燥失重 | ≤0.20% | ≤0.5% | ≤0.30% | ≤0.30% |
| 熾灼殘?jiān)?/td> | ≤0.10% | ≤0.10% | ≤0.30% | ≤0.20% |
| 不溶性雜質(zhì) | / | / | / | ≤50 ppm |
| 總菌 | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g |
| 霉菌&酵母菌 | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g |
| 致病菌 | 克羅諾桿菌/腸桿菌/沙門(mén)氏菌/蠟樣芽胞桿菌/梭狀芽胞桿菌 （可根據(jù)要求檢測(cè)） | |||
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