| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or almost white imperceptibility crystalline powder | Conforms |
| Identification | Meet the requirement | Conforms |
| Melting point | 198℃~207℃ | 205℃ |
| Specific rotation | -41°~-45° | -43° |
| Limit of Mercator | ≤0.10ml | 0.02ml |
| Loss on drying | ≤0.50% | 0.18% |
| Total impurities | ≤2.00% | 0.23% |
| Methanol | ≤0.30% | Not detected |
| Assay | 97.0%~103.0% | 99.80% |
| Conclusion: The Product Conforms to CP/USP/EP. |
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