Product Brief Introduction
Product name:VitaminB12
CAS:68-19-9
MF:C63H88CoN14O14P
MW:1355.37
Product Specification
|
Item |
Specification |
|
Appearance |
Dark red crystals or amorphous or crystalline red powder. |
|
Identification |
UV:The absorption spectrum exhibits maxima at 278±1nm,361±1nm,and550±2nm. |
|
|
A361nm/A278nm:1.70-1.90 A361nm/A550nm:3.15-3.40 |
|
|
Cobalt:Meets USP requirements |
|
|
HPLC: The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay. |
|
Loss on Drying |
≤ 10.0% |
|
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 |
|
Yeasts&Molds |
≤ 100cfu/g |
|
Assay |
97.0%-102.0% |
