| Testing Index | Specifications | Conclusion | |
| Characteristics | A white or almost white crystalline powder | A white powder | |
| Identification | The infrared absorbance spectrum conforms to the reference spectrum | Conform | |
| Melting point | 136.0~142.0℃ | 138.0~140.0℃ | |
| Loss on dried | ≤0.50% | 0.10% | |
| Residue on ignition | ≤0.10% | 0.03% | |
| Heavy metal | ≤20ppm | <20ppm | |
| Phosphate | ≤0.05% | <0.05% | |
| Residual solvents | Dichloromethane≤600ppm | Not detected | |
| Acetone: ≤5000ppm | 565ppm | ||
| Related compounds |
A | ≤0.20% | 0.12% |
| B | ≤0.20% | 0.06% | |
| C | ≤0.20% | 0.01% | |
| Assay(on the dried basis) | 98.5%~ 101.0% | 99.30% | |
| Particle size | D96%≤15um | Conforms | |
| Conclusion: The Product Conforms to USP. |
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