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Technical Data Sheet Vitamin B12
Compound Information
Product Name:
Vitamin B12
CAS No.:
68-19-9
Molecular Formula:
C63H88CoN14O14P
Molecular Weight:
1355.37
Storage:
Store at 0 -8 °C
Revision Date:
2026-04-15
Analytical Information
| Tests | Specifications |
|---|---|
| Appearance | Dark red crystalline powder |
| UV | Wavelength range: 200-700 nm. The absorption spectrum exhibits maxima at 278 ± 1, 361 ± 1, and 550 ± 2 nm. A361/A550nm = 3.15 -3.40. A361/A278= 1.70 -1.90 |
| LOD | ≤ 12% |
| Related Substances | 7?, 8?-Lactocyanocobalamin : ≤ 1%. 50-carboxycyanocobalamin : ≤ 0.5%. 34-Methylcyanocobalamin : ≤ 2%. 32-Carboxycyanocobalamin : ≤ 1%. 8-Epi-cyanocobalamin : ≤ 1%. Any other unidentified impurity : ≤ 0.5%. Total impurities : ≤ 3% |
| Purity | 96 - 102% (On dried basis) |
| Specification Reference | Meets USP specification |
| Additional Information | Identification B : A red or orange-red color appears immediately after the addition of nitroso R salt. The red color persists after boiling with the addition of hydro-chloric acid. Identification C: The retention of the major peak of the sample solution c |
| MS | Pass test |
| 1H NMR | Pass test |
| ESR | Pass test |
| IR | Pass test |
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