| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White amorphous powder | Conforms |
| Identification | IR spectra is consistent with CRS | Conforms |
| The retention time of the major peak of the assay preparation corresponds to that of the standard preparation, as obtained in the assay | Conforms | |
| Water | ≤0.2% | 0.12% |
| Calcium | 8.0%~8.9% | 8.7% |
| Urea | 12.9%~13.3% | 13.1% |
| Salicylic Acid | ≤1.0% | 0.06% |
| Heavy metal | ≤20ppm | <20ppm |
| Assay | ≥98.0% | 93.2% |
| Conclusion: The Product Conforms to USP. |
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