| Testing items | Specifications | Results |
| Description | Yellow or greenish-yellow, crystalline powder | Conforms |
| Solubility | Practically insoluble in water, sparingly soluble in tetrahydrofuran. Slightly soluble in acetone and in ethanol(96%). Very slightly soluble in cyclohexane | Conforms |
| Identification |
|
Conforms |
|
Conforms | |
|
Conforms | |
| Loss on drying | ≤0.50% | 0.3% |
| Sulfated ash | ≤0.10% | 0.05% |
| Heavy metals | ≤20ppm | <20ppm |
| Palladium | ≤10ppm | <10ppm |
| Related substances | Impurity A ≤0.30% | 0.22% |
| Impurity B ≤0.30% | 0.10% | |
| Total impurities ≤1.0% | 0.3% | |
| Residual solvents | Tetrahydrofuran ≤720ppm | Conforms |
| Ethanol ≤5000ppm | Conforms | |
| Ethyl Acetate ≤5000ppm | Conforms | |
| Assay | 98.0%~102.0% | 99.70% |
| Conclusion: The Product Conforms to USP/EP. |
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