| Items | Standards | Results |
| Characteristics | White to off-white crystalline powder | White crystalline powder |
| Identification | By IR | Complies |
| By HPLC | Complies | |
| Melting Point | 166.0ºC~169.0ºC | 167.0ºC~168.0ºC |
| Loss on Drying | ≤ 0.50% | 0.12% |
| Heavy Metal | ≤ 20ppm | Complies |
| Residue on Ignition | ≤ 0.10% | 0.03% |
| Chloride | ≤ 0.014% | Complies |
| Related Substances | Any single impurity: ≤0.10% | 0.04% |
| Total impurities: ≤0.50% | 0.08% | |
| Assay (HPLC basis on drying) | ≥ 99.0% | 99.60% |
| Reference Standard | In-house Standard | |
| Conclusion | The product complied to In-house standard. | |
| Storage | Preserve in tight,light-resistant containers in a cool place | |