| TESTING ITEMS | SPECIFICATION | RESULTS |
| Appearance | White or yellow-white crystalline powder | Conforms |
| Identification | Meet the requirement | Conforms |
| Melting point | 149℃~153℃ | 152℃ |
| Specific rotation | +18.5°~+20.5° | +19.7° |
| Acidity | ≤0.1ml | <0.1ml |
| Loss on drying | ≤0.5% | 0.21% |
| Residue on ignition | ≤0.1% | 0.05% |
| Sulphated ash | ≤0.1% | 0.04% |
| Related substances | ≤0.5% | 0.19% |
| Assay | 98.0%~ 102.0% | 99.10% |
| Conclusion: The Product Conforms to CP/USP/EP. |
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