CAS number： 104010-37-9
Molecular formula： C19H16N5NaO7S3
molecular weight： 545.5444
Chemical structure：
| Product Name | Ceftiofur Sodium sterile | |
| Shelf Life | 2 years | |
| Analysis Test | Specification | Result |
| Description | white to grayish yellow powder | Light yellow powder |
| Identification | Retention time of major peak correspond to standard | Correspond to standard |
| It shows the identification of sodium | Conforms | |
| Clarity of solution | Clarify or not more intensely prononuced than reference suspension 1# | Conforms |
| Colour of solution | Colourless or not more intensely colored than reference solution Y9 or O9 | 7 |
| pH | 5.5～7.5 | 7.2 |
| Water | ≤3.0% | 2.1% |
| Loss on drying | ≤6.0% | 4.9% |
| Cefotaxime ≤2.0% | 0.2% | |
| Related substance | Total Related Substances ≤5.0% | 0.9% |
| Assay（on dried basis） | Calculate the content of ceftiofur with respect to the peak area obtained in the chromatogram by the external standard method ≥85.0% | 92.8% |
| Purity | Ceftiofur sodium≥95.0% | 99.1% |
| Bacterial endotoxins | ≤0.2EU/mg | Conforms |
| Sterility | Conforms | Conforms |
