vitamin b12 Cyanocobalamin V B12 99%
MOQ: 100g
1. Vitamin B12 Characteristics
Synonyms: Cyanocobalamin
Formula: C63H88CoN14O14P
Weight: 1355.39 g/mol
MOQ: 100G
Package: 25KG/carton; 1kg/tin
HS Code: 2936260000
Specification: EP/BP/ USP/CHP
Grade: Pharmaceutical/Food/Feed grade
Type: Pure
Apperance: dark red crystal power
1 Vitamin B12 Pure/99% USP specification
Item | USP41 |
Appearance | Dark red crystals or amorphous or crystalline red powder |
Identification A | A361nm/A278nm: 1.70-1.90
A361nm/A550nm: 3.15-3.40 |
Identification B | Cobalt: Meets USP requirements |
Identification C | HPLC: The retention time of the major peak of the sample solution corresponds to that of the standard solution. |
Loss on drying | ≤10.0% |
Assay | 97.0%-102.0% |
Related substances | |
Total impurities | ≤3.0% |
7β, 8β-Lactocyanocobalamin | ≤1.0% |
34-Methylcyanocobalamin | ≤2.0% |
8-Epi-cyanocobalamin | ≤1.0% |
Any other unidentified impurity and 50-Carboxycyanocobalamin, 32-Carboxycyanocobalamin | ≤0.5% |
Acetone | ≤5000ppm |
Total aerobic microbial count | ≤1000cfu/g |
Total combined yeasts/mould count | ≤100cfu/g |
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