| Item | Specification | Results |
| Description |
Dark red crystalline powder,
N o smelly and tasteless , Hygroscopicity |
Dark red crystalline powder,
N o smelly and tasteless , Hygroscopicity |
| Identification | Positive | Positive |
| Ratio Absorbances |
A361nm/A278nm: 1.70-1.90
A361nm/A550nm: 3.15-3.40 |
1.87
3.32 |
| Pseudo Cyanocobalamin | Complies | Complies |
| Loss on drying | ≤12.0% | 2.20% |
| Assay on dried | 96.0~100.5% | 98.50% |
| Bacteria | ≤1000cfu/g | 20cfu/g |
| Mould,Yeasts | ≤100cfu/g | No found |
| E Coli | No found | No found |
| Limit of residual solvents | Acetone≤0.5% | 0.02% |
| Conclusion | Conform to Complies with USP.34 | |