CAS number： 93106-60-6
Molecular formula： C19H22FN3O3
molecular weight： 359.4
Chemical structure：
| Products name | Enrofloxacin Base | |
| Shelf life | 3 years | |
| Items | Specification | Results |
| Appearance | yellow or lighy orange-yellow, crystalline powfer | yellow crystalline powder |
| Mekting point | 221-226 | 222.9--224.3 |
| Identigication | ||
| HPLC | the retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay. | complies |
| IR | The spectrum of sample conforms to that of the reference spectrum | comploes |
| Test | ||
| Appearance of solution | The solution is not more opalescent than reference suspension I and not more intensely coloured than reference solution Y or GY | complies |
| Related substances | ||
| Cirprofloxacin | not more than 0.5% | 0.08% |
| Unspecified impurity | not more than 0.5% | 0.09% |
| total impurities | not more than 0.7% | 0.2% |
| Loss on drying | not more than 0.5% | 0.04% |
| residue on ignition | not more than 0.2% | 0.05% |
| Heacy metals | not more thab 0.02% | less than 0.002% |
| Assay | not less than 99% | 99.5% |
| conclusion: the result conforma wih do not conform with the specifications | ||
