CAS No:138199-71-0
Shelf life:4 years
The detailed specifications are as below:
| Items | Standard |
| Appearance | Light yellowish-white to yellow-white crystals or crystalline powder |
| Soecific rotation | -92°~-106° |
| Identification | A:Infrared Absorption B:The retention time of the major peak of the sample solution corresponds to that of the standard solution,as obtained in the assay. |
| Water | 2.0%~3.0% |
| Residue on ignition | ≤0.2% |
| Related substances (HPLC 1) | N-Desmethyl levofloxacin:≤0.3% Diamine derivative:≤0.3% Levofloxacin N-oxide:≤0.3% 9-Desfluoro levofloxacin:≤0.3% D-Isomer:≤0.8% Any unknown impurity:≤0.1% Total impurities:≤0.5% |
| Related substances (HPLC 2) | Levofloxacin related compound A:≤0.20% Levofloxacin related compound B:≤0.13% Any other impurity:≤0.10% Total impurities:≤0.50% |
| Assay (Anhydrous basis) | 98.0%~102.0% |