| Specific rotation | -92° to -99° |
| Conclusion | Conforms to USP specification |
| Residue on ignition | ≤0.1% |
| Heavy metals | ≤10ppm |
| pH | 6.8 – 8.0 |
| Loss on Drying | 2.0% – 3.0% |
| Residual solvent | Conforms to the spectrum of Levofloxacin RS |
| Related Substances | HPLC determination |
| Assay (HPLC) | ≥98.0% |
| Solubility in water | Slightly soluble in water, slightly soluble in ethanol, insoluble in either, soluble in glacial acetic acid, slightly soluble in 0.1 mol/L hydrochloric acid solution. |
| Appearance | White to light yellow crystalline powder |
| Identification (UV) | visible spectrophotometer, IR, HPLC |
| Identification (IR) | Conforms to the spectrum of Levofloxacin RS |
| Identification (HPLC) | The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the Assay |
| Limits | The peak area of levofloxacin shall not be larger than the main peak area of control solution 1% |
