| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or off-white crystalline powder | Conforms |
| Identification | Infrared absorption: 197M Ultraviolet absorption: 197U |
Conforms |
| Melting point | 137~140 | 137~140 |
| Specific rotation | -9.0~-12.0 | -11.0 |
| PH | 7.0~9.0 | 8.5 |
| Residue on ignition | ≤0.20% | 0.10% |
| Loss on drying | ≤0.50% | 0.20% |
| Individual impurities | ≤0.20% | 0.07% |
| Total impurities | ≤0.50% | 0.20% |
| Assay | 99.0%~101.0% | 100.3% |
| Conclusion: The Product Conforms to USP. |
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