Customization: | Available |
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Function: | Vitamins and Minerals Deficiency Drug, Nutritional Therapeutics |
Certification: | GMP, FDA |
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Specification of Vitamin B12 Cyanocobalamin | |
TEST ITEM | SPECIFICATION |
Description | Dark red crystal or crystalline hygroscopic powder,with no smell and no taste; hyproscopicity |
Identification A | A361nm/A278nm:1.70-1.90; A361nm/A550nm:3.15-3.40 |
Identification B | The retention time of major peak of the sample solution corresponds to that of the standard solution |
Identification C | Positive |
Infrared Spetrum | The infrared spectrum of the sample should be consistent with the reference map |
Loss on drying | ≤12.0% |
Assay | 96.0 % to 102.0% |
Total impurities | ≤3.0 |
7β, 8β-lactocyanocobalamin | ≤1.0 |
50-carboxycyanocobalamin | ≤0.5 |
34-methylcyanocobalamin | ≤2.0 |
32-carboxycyanocobalamin | ≤1.0 |
8-Epi-cyanocobalamin | ≤1.0 |
Any other unidentified impurity | ≤0.5 |
Total bacteria count | ≤800cfu/g |
Molds&Yeasts | ≤100cfu/g |
E. coli | Negative |
Residual solvents | Acetone≤0.5% |