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Vitamin B12 (cyanocobalamin)

Supplier: MilliporeSigma

Certifications: Corresponds to Ph Eur, BP, USP.

Formula: C₆₃H₈₈CoN₁₄O₁₄P
MW: 1355,38 g/mol
Melting Pt: >300 °C
MDL Number: MFCD00151092
CAS Number: 68-19-9
Specification Test Results
pH Value 6.0 (1 g/l, H2O, 20 °C)
Bulk Density 450 - 600 kg/m3
Solubility 12 g/l
Assay (Ph Eur, calculated on dried substance) 96.0 - 102.0%
Assay (USP, calculated on dried substance) 96.0 - 102.0 %
Identity (IR-spectrum) Passes Test
Identity (Cobalt) Passes Test
Identity (TLC) Passes Test
Appearance Dark-red, Crystalline Powder or Dark-red Crystals
Absorption ratio (A 361 nm/278 nm) 1.70 - 1.90
Absorption ratio (A 361 nm/550 nm) 3.15 - 3.40
As (Arsenic) ≤3 ppm
Cu (Copper) ≤25 ppm
Pb (Lead) ≤10 ppm
Zn (Zinc) ≤25 ppm
Related substances (HPLC, Ph Eur) ≤3%
Related substances (HPLC, USP): 7ß,8ß-Lactocyanocobalamin ≤1.0%
Related substances (HPLC, USP): 50-Carboxycyanocobalamin ≤0.5%
Related substances (HPLC, USP): 34-Methylcyanocobalamin ≤2.0%
Related substances (HPLC, USP): 32-Carboxycyanocobalamin ≤1.0%
Related substances (HPLC, USP): 8-Epi-cyanocobalamin ≤1.0%
Related substances (HPLC, USP): Any other unidentified impurity ≤0.5%
Related substances (HPLC, USP): total impurity ≤3.0%
Acetone (HS-GC) ≤5000 ppm
Other residual solvents (ICH Q3C) Excluded by production process
Loss on drying (Ph Eur) ≤12.0%
Loss on drying (USP) ≤12.0%
Storage Store at 15 to 25 °C



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Size Packaging Supplier No. VWR Catalog Number Unit Price Quantity
100 g Metal can 5.24950.0100 EM5.24950.0100 Each (100g) Retrieving Restricted

Temperature sensitive This Item is temperature-controlled and may have specific temperature and storage requirements for shipping/delivery.

restricted In order to process your orders without delay, we request that you provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • State issued document with your organization's Federal Tax ID Number
  • State issued document with your organization's Resale Tax ID Number
  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name and address

* Please note if your account is within the State of California two of these pieces of identification will be required.
VWR will not lift restrictions for residential shipping addresses.

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