| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or off-white powder | Confirms |
| Identification | Meets the requirements | Confirms |
| Melting point | 250℃~265℃ | 260.1℃ |
| Optical rotation | +20.0°~+22.0° | +21.0° |
| Loss on drying | ≤0.10% | 0.05% |
| Heavy metals | ≤10ppm | <10ppm |
| Single impurity | ≤0.15% | 0.01% |
| PH | 7.5~8.5 | 7.9 |
| Assay | 99.0%~101.0% | 99.60% |
| Conclusion: The Product Conforms to USP. |
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