CAS number： 443-48-1
Molecular formula： C6H9N3O3
molecular weight： 171.154
Chemical structure：
| Product name | Metronidazole | |
| Shelf Life | 4 years | |
| ITEMS | STANDARDS | RESULTS |
| Characteristics | a white or yellowish crystalline powder, slighting sobube in water, in acetone, in alcohol and in methylene, chloride, very slightly solube in ether | COMPLY |
| Identification | a) Melting point 159-163℃ | 161.1-161.3℃ |
| b) Specific absorbance 365-395 | b) 375 | |
| c) IR | c) COMPLY | |
| d) The solution gives the reaction of primary aromatic amines | d) COMPLY | |
| Appearance of solution | SUSPENSION Ⅱ | COMPLY |
| AND SOLUTION GY6 | ||
| Related substances | Impurity:0.1MAX | 0.02% |
| Total impurity:0.2MAX | 0.06% | |
| Heavy Metal | 20PPM MAX | <20PPM |
| Loss on drying | 0.5% MAX | 0.19% |
| Particle size | 40-80mesh | COMPLY |
| Assay | 99.0%-101.0% | 99.4% |
| Conclusion: comply with the standard | ||