| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or yellow crystalline powder, Practically insoluble in water, sparingly soluble in alcohol | Conforms |
| Melting point | 158℃~162℃ | 159.9℃~160.5℃ |
| Absorption at 318nm | 170~190 | 183 |
| Infrared absorption | Conforms to the requirement | Conforms |
| A violet-pink color | Conforms to the requirement | Conforms |
| The solution color is clear | Conforms to the requirement | Conforms |
| Related substances(HPLC) | Any individual impurity ≤0.10% | 0.07% |
| Sum of all impurity ≤0.30% | 0.23% | |
| Loss on drying | ≤0.50% | 0.15% |
| Heavy metals | ≤20ppm | Conforms |
| Sulphated Ash | ≤0.10% | 0.04% |
| Assay | 98.5% ~100.5% | 99.50% |
| Conclusion: The Product Conforms to BP. |
||
