| L-纈氨酸 | CP2020 | EP11 | USP2023 | AJI92 | FCC11 |
| 含量 | ≥98.5% | 98.5-101.0% | 98.5-101.5% | 99.0-100.5% | 98.5～101.5% |
| 酸度 | 5.5-6.5 | / | 5.5-7.0 | 5.5-6.5 | 5.5～7 |
| 比旋度[a]D20 | +26.6°-+28.8° | +26.5°-+29.0° | / | +27.6°-+29.0° | +26.7° ～+29° |
| 比旋度[a]D25 | / | / | +26.6°-+28.8° | / | +26.6° ～+28.9° |
| 透光 | ≥98.0% | / | / | ≥98.0% | / |
| 溶液外觀 | / | clear & colorless ≤BY6 | / | / | / |
| 氯化物 | ≤0.02% | ≤0.02% | ≤0.05% | ≤0.02% | / |
| 銨鹽 | ≤0.02% | ≤0.02% | / | ≤0.02% | / |
| 硫酸鹽 | ≤0.03% | ≤0.03% | ≤0.03% | ≤0.02% | / |
| 鐵鹽 | ≤10PPM | ≤10PPM | ≤30PPM | ≤10PPM | / |
| 重金屬 | ≤10PPM | / | / | ≤10PPM | / |
| 砷鹽 | ≤1PPM | / | / | ≤1PPM | / |
| 鉛 | / | / | / | / | ≤ 5 ppm |
| 其他氨基酸 | ≤0.5% | / | Individual impurities≤0.5% Total impurities≤2.0% | conforms | / |
| 茚三酮活性物質 | / | Impurity B at 570 nm≤0.4% Each impurity ≤0.2% Total ≤1.0% | / | / | / |
| 不溶性雜質 | / | / | / | / | ≤ 50 ppm |
| 干燥失重 | ≤0.20% | ≤0.50% | ≤0.30% | ≤0.20% | ≤ 0.3% |
| 熾灼殘渣 | ≤0.10% | ≤0.10% | ≤0.10% | ≤0.10% | ≤ 0.1% |
| 總菌 | ≤ 500 CFU/g | ≤ 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 | ≤ 50 CFU/g |
| 致病菌 | 克羅諾桿菌 /腸桿菌 /沙門氏菌 /蠟樣芽胞桿菌 /梭狀芽胞桿菌 （可根據(jù)要求檢測） | ||||
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