| Testing Index | Specifications | Conclusion |
| Description | White to off-white, practically odorless, crystalline powder | Comply |
| Identification |
|
Comply |
|
Comply | |
| Specific rotation | +83.0~+89.5° | +87.8° |
| Loss on drying | ≤0.50% | 0.03% |
| Heavy metals | ≤0.002% | <0.002% |
| Chromatographic purity | Meet the requirements | Comply |
| Residual solvent methanol |
≤0.30% | Not Detected |
| Assay(on dry basis) | 98.5%~ 101.5% | 99.60% |
| Conclusion: The Product Conforms to USP. |
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