| Items | Specifications | Results |
| Description | White or almost white Crystal powder;have no smelly and tasteless | White crtystalline powder;have no smelly and tasteless |
| Melting temperature | 143～152℃ | 147℃ |
| Specific rotation | +24°～+28° | +26° |
| Fumarate | 83.7～87.3mg | 85.4mg |
| Identification | Complies | Complies |
| PH | 3.1-4.1 | 3.7 |
| Chromatographic purity | Not more than 1.0% of any identified impurity is found;not more than 0.5% of any unidentified impurity is found;and not more than 3.0% of total impurities is found | Complies |
| Color and clarity of solution | ≤0.030(650nm) | 0.010 |
| ≤0.150(400nm) | 0.030 | |
| Limit of residual solvents | Complies | Complies |
| Loss on drying | ≤0.5% | 0.2% |
| Residue on ignition | ≤0.1% | 0.06% |
| Heavy metals | ≤0.001% | ＜0.001% |
| Label Potency | 97.0～102.0% | 99.0% |