| TESTING ITEMS | SPECIFICATION | RESULTS |
| Appearance | White crystalline powder | Conforms |
| Melting point | 136℃~140℃ | 137.2℃~138.3℃ |
| Loss on drying | ≤1.0% | 0.23% |
| Specific optical rotation | -16.0°~-17.0° | -16.20° |
| Residue on ignition | ≤0.1% | 0.04% |
| Heavy metals | ≤20ppm | Conforms |
| Clarity of the solution | Clear and colorless or pale yellow solution | Conforms |
| Assay(on the dried basis) | ≥99.0% | 99.37% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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