| Testing Index | Specifications | Conclusion | |
| Appearance | White crystalline powder | white crystalline powder | |
| Heavy metal（Pb） | ≤0.001% | <0.001% | |
| PH-value | 4.0~6.5 | 4.6 | |
| Specific rotation [ α ]20D  |
-33.5°～-37.0° | -35.9° | |
| Residue on ignition | ≤0.25% | 0.06% | |
| Loss on drying | ≤0.5% | 0.1% | |
| Identity |
Test A (IR) | To comply | Complies |
| Test B (TLC) | To comply | Complies | |
| Chromatographic purity |
Single impurity | ≤0.25% | 0.10% |
| Total impurity | ≤1.0% | 0.24% | |
| Assay（On the dried substance） | 98.9%~ 101.5% | 99.9% | |
| Bulk density | 0.35g/cm3 | ||
| Tapped density | 0.46g/cm3 | ||
| Conclusion: The Product Conforms to USP/EP. |
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