| Testing items | Specifications | Results |
| Description | White powder or off-white powder | Conforms |
| Solubility | Conforms | Conforms |
| Identification | Have the largest absorption at 262±2nm Have the biggest absorption at 231±2nm A250/A260=0.70~0.80 A280/A260=0.32~0.38 |
261.7nm 230.2nm A250/A260=0.74 A280/A260=0.36 |
| Clarity and color of solution | Clarify and colorless | Conforms |
| Rotation | +6.0°~+10.0° | +8.8° |
| Loss on drying | ≤0.5% | 0.1% |
| Heavy metals | ≤0.001% | <0.001% |
| Ignited residue | ≤0.1% | 0.07% |
| Purity (HPLC) | ≥98.0% | 99.7% |
| Contents(on drysis) | 98.0%~102.0% | 98.9% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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