| L-天门冬氨酸 | USP32 | AJI92 | 
| 含量 | 98.5~101.5% | 99.0-100.5% | 
| 酸度 | / | 2.5-3.5 | 
| 比旋度[a]D20 | + 24°~ + 26° | +24.8°-+25.8° | 
| 比旋度[a]D25 | / | / | 
| 透光 | / | ≥98.0% | 
| 氯化物 | ≤ 0.02% | ≤0.02% | 
| 铵盐 | / | ≤0.02% | 
| 硫酸盐 | ≤ 0.03% | ≤0.02% | 
| 铁盐 | ≤ 0.001% | ≤10PPM | 
| 重金属 | ≤ 0.001% | ≤10PPM | 
| 砷盐 | / | ≤1PPM | 
| 其他氨基酸 | / | conform | 
| 茚三酮活性物质 | / | / | 
| 干燥失重 | ≤ 0.5% | ≤0.20% | 
| 炽灼残渣 | ≤ 0.1% | ≤0.10% | 
| 总菌 | ≤ 1000 CFU/g | ≤ 1000 CFU/g | 
| 霉菌&酵母菌 | ≤ 100 CFU/g | ≤ 100 CFU/g |