| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or off-white 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 | ≤5.0% | 2.1% |
| Cis-Isomer | 82.0%~88.0% | 86.0% |
| Trans-Isomer | 12.0%~18.0% | 14.0% |
| Individual impurity | ≤3.0% | 1.6% |
| Total impurities | ≤10.0% | 6.2% |
| Residue on ignition | ≤5.0% | 1.8% |
| Heavy metal | ≤30ppm | <30ppm |
| Assay(Tilmicosin) | ≥85.0% | 93.8% |
| Conclusion: The Product Conforms to USP. |
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