Suppliers with verified business licenses
Audited Supplier | Product Name | Vitamin B12 |
| Characters | Dark red crystalline powder or dark red crystals |
| Identification A | UV: A361 nm/A278nm : 1.70~1.90 A361 nm/A547nm~559nm:3.15~3.45 |
| Identification B | TLC: Meets Ph. Eur. monograph requirements |
| Loss on drying | ≤10.0% |
| Assay | 97.0%~102.0% |
| Related substances | Total impurities: ≤3.0% Unknown impurity 1# : ≤1.0% Unknown impurity 2# : ≤0.5% Unknown impurity 3# : ≤0.32% Any other detectable impurity: ≤0.2% |
| Residual solvent | Acetone ≤0.5% |
| Total plate count | ≤800cfu/g |
| Yeasts and molds | ≤80cfu/g |
| E.coli | Negative |
Suppliers with verified business licenses
Audited Supplier 
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