| Item | Standard | Result |
| Appearance | White to off-white powder | Conform |
| Assay (on dry basis%) | 97.0-102.0 | 99.1 |
| N-[n-(3,3-Dimethylbuthy)-a-aspartyl]-L-phenylalanine(%) | ≤1.5 | 0.396 |
| Other related substances (%) | ≤2.0 | 0.504 |
| Water (%) | ≤5.0 | 4.72 |
| Burning residue (%) | ≤0.2 | 0.06 |
| PH (5g/L solution) | 5.0-7.0 | 5.68 |
| Pb (mg/kg) | ≤1 | Conform |
| Specific rotation (20℃,D) | -40.0--43.3 | -41.411 |