| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Off-white or pale yellow powder | Confirms |
| Identification | Meets the requirements | Confirms |
| Melting point | 220℃~230℃ | 223.6℃ |
| Loss on drying | ≤0.50% | 0.09% |
| Residue on ignition | ≤0.15% | 0.04% |
| Assay | ≥95.0% | 99.20% |
| Conclusion: The Product Conforms to USP. |
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