Vitamin B12 (Cyanocobalamin / Methylcobalamin)

Product Details: Vitamin B12 (Cyanocobalamin / Methylcobalamin)

What is Vitamin B12 (Cyanocobalamin / Methylcobalamin)?

Vitamin B12 is a cobalt-containing corrinoid research compound. It is supplied as a 10ml solution at 1mg/ml, available in two forms: cyanocobalamin, the cyano-ligated reference form, and methylcobalamin, the methyl-ligated direct coenzyme form.

Cyanocobalamin is a synthetic corrinoid compound. This is commonly used as the stable, pharmaceutical-grade reference form of vitamin B12. In laboratory settings, it is studied to assess its influence on cellular signaling pathways involved in:

• Methionine synthase coenzyme activity
• Methylmalonyl-CoA mutase coenzyme activity, and
• DNA synthesis and methylation research

On the other hand, methylcobalamin is a direct-acting coenzyme analog of vitamin B12. It is the methyl-ligated form found in cellular methylation reactions. In laboratory settings, it is investigated for its role in the methylation cycle and nerve regeneration. These are processes central to the study of neuroprotective and metabolic research in experimental models.

This liquid solution format is used in research settings as a delivery method that allows investigators to study cobalamin uptake and cellular distribution in solution-based experimental protocols.

Disclaimer: This research-grade solution is not approved by the FDA as a drug product. Cyanocobalamin is separately FDA-approved as a prescription pharmaceutical for treating B12 deficiency (available through licensed healthcare providers); this injectable research solution is not that product and is not sold for therapeutic purposes. It is not intended to diagnose, treat, cure, or prevent any disease. This product is strictly for laboratory research purposes only.

ATTENTION: This product is strictly for LABORATORY AND RESEARCH PURPOSES ONLY. Not for human or veterinary use.

Mechanism of Action of Vitamin B12 (Cyanocobalamin / Methylcobalamin)

Cyanocobalamin Working in Preclinical Models

Cyanocobalamin is thought to exert its effects primarily through intracellular conversion to active coenzyme forms after uptake. Specifically, experimental data suggest it is converted to methylcobalamin and adenosylcobalamin, which then participate in the methionine synthase and methylmalonyl-CoA mutase reactions. This is thought to affect DNA synthesis, methylation, and fatty-acid/amino-acid metabolism in research models.

Key mechanistic observations from laboratory studies:

• Intracellular conversion: Cyanocobalamin is thought to require enzymatic conversion before acting as an active coenzyme.
• Methionine synthase support: Studies in laboratory settings have observed its role as a precursor in methylation-cycle research.
• Methylmalonyl-CoA mutase support: Cyanocobalamin is thought to support fatty-acid and amino-acid metabolism research via this coenzyme pathway. In addition to methionine synthase, adenosylcobalamin (derived intracellularly from cyanocobalamin) is the cofactor for L-methylmalonyl-CoA mutase — the enzyme impaired in methylmalonic acidemia. This pathway is investigated in branched-chain amino acid catabolism and odd-chain fatty acid research models. 
• Deficiency-state modeling: In research models, cyanocobalamin has been used to study correction of cobalamin-deficiency biomarkers.

Methylcobalamin Working in Preclinical Models

Methylcobalamin is thought to work primarily as a direct coenzyme for methionine synthase, without requiring intracellular conversion. It supports the methylation cycle directly, a metabolic pathway central to nerve-regeneration research in experimental models as it directs neurite outgrowth and functional recovery signaling.

Key mechanistic observations from laboratory studies:

• Direct coenzyme activity: Methylcobalamin is thought to act as a coenzyme for methionine synthase without intracellular conversion.
• Erk1/2 and Akt activation: In vitro studies have observed methylcobalamin increasing Erk1/2 and Akt signaling activity through the methylation cycle.
• Nerve regeneration signaling: Preclinical data suggest methylcobalamin promotes neurite outgrowth and survival, which may play a role in nerve-regeneration research in rodent injury models.
• Functional recovery research: Methylcobalamin has been observed to improve functional recovery metrics in rat sciatic nerve injury research models.

Chemical Properties of Vitamin B12 (Cyanocobalamin / Methylcobalamin)

Cyanocobalamin

Property	Detail
Molecular Formula	C63H88CoN14O14P
Molecular Weight	1,355.37 g·mol⁻¹
CAS Number	68-19-9
Purity	≥99% (HPLC verified, per batch COA)
Physical Form	Dark red solution (1mg/ml)
Storage	2–8°C, protected from light
Classification	Research Use Only (RUO)

Methylcobalamin

Property	Detail
Molecular Formula	C63H91CoN13O14P
Molecular Weight	1,344.38 g/mol
CAS Number	13422-55-4
Purity	≥99% (HPLC verified, per batch COA)
Physical Form	Red to dark red solution (1mg/ml)
Storage	2–8°C, protected from light
Classification	Research Use Only (RUO)

Available Forms

Property	Detail
Cyanocobalamin	General cobalamin reference standard, stability-focused research
Methylcobalamin	Methylation-cycle and nerve-regeneration research requiring the direct coenzyme form
Format	10ml solution, 1mg/ml
Origin	USA-made

Research Applications of Vitamin B12 (Cyanocobalamin / Methylcobalamin)

1. Coenzyme Pathway Research In preclinical models, cyanocobalamin has been investigated for its role as a precursor to active coenzyme forms, suggesting involvement in methionine synthase and methylmalonyl-CoA mutase research.
2. Methylation Cycle Studies Methylcobalamin's direct coenzyme activity makes it a tool for investigating methylation-cycle signaling and homocysteine-to-methionine conversion in metabolic research assays.
3. Nerve Regeneration Research Methylcobalamin is investigated in rodent peripheral-nerve-injury models for its role in Erk1/2 and Akt signaling activation and functional recovery, relevant to neuroregeneration research.
4. Cobalamin Deficiency Modeling Both forms have been used separately in research models of cobalamin deficiency to study correction of deficiency-state biomarkers and malabsorption-related research endpoints.

B12-deficient cell models accumulate homocysteine due to impaired methionine synthase remethylation — a standard cellular stress model used in cardiovascular, neurotoxicity, and epigenetic research. 

Risk and Handling Precautions

Risk Tier: LOW

This rating reflects both cobalamin forms' long-established safety history as reference compounds in nutrition and biochemical research, while noting that this specific research-grade solution has not been evaluated under the same regulatory process as an approved pharmaceutical product. Researchers must observe the following precautions at all times.

Handling Precautions: Vitamin B12 (Cyanocobalamin / Methylcobalamin) should be handled by trained laboratory personnel only. Use appropriate personal protective equipment (PPE) at all times, including gloves and eye protection. Avoid direct skin contact, inhalation, or accidental exposure during laboratory handling.

Exposure Risks: Both forms have a long safety history as reference and research compounds, though no formal human exposure data exists specific to this research-grade solution.

Storage: Store at 2–8°C in a dry, dark environment protected from light. Check the batch Certificate of Analysis for lot-specific guidance. Do not use if the seal has been compromised. Methylcobalamin is more light- and temperature-sensitive than cyanocobalamin; minimize exposure time outside refrigeration.

Toxicity and Data Limitations: No chronic toxicity data exist specific to this research-grade formulation. Published safety data comes from studies of each compound in other administration contexts, which cannot be assumed to apply directly to this vendor-supplied solution.

Why Choose BehemothLabz for Research-Grade Vitamin B12?

BehemothLabz supplies Vitamin B12 (Cyanocobalamin / Methylcobalamin) for laboratory and research purposes. Every batch is independently tested by third-party laboratories for purity and identity. A Certificate of Analysis is publicly available for each lot. BehemothLabz does not self-certify.

The compound is USA-made and held to research-grade standards. It is available strictly to qualified researchers for use in controlled laboratory environments, in either the cyanocobalamin or methylcobalamin form to suit different research needs.

BehemothLabz Disclaimer

ATTENTION: All BehemothLabz products are strictly for LABORATORY AND RESEARCH PURPOSES ONLY. They are not to be used for any human or veterinary purposes.

 

Please make sure you go through the Terms and Conditions and familiarize yourself with them, as it is important. Kindly research the scientific uses of this product before making any purchases. Make note that the packaging and labels of the product may differ from those shown on the website.

Buying the product means you agree to our Terms and Conditions. You can contact our customer service team at support@behemothlabz.com if you are not fully satisfied with the product.

Vitamin B12 Research FAQs

How does cyanocobalamin differ from methylcobalamin mechanistically?

Cyanocobalamin requires intracellular conversion before it can act as a coenzyme, while methylcobalamin acts directly as a coenzyme for methionine synthase without that conversion step. Both share the same corrin-ring cobalt core but differ in the chemical group attached to the cobalt atom.

Why would a researcher choose one form over the other? 

Cyanocobalamin is generally chosen for its stability and long history as a reference standard. Methylcobalamin is chosen specifically for methylation-cycle or nerve-regeneration research where the direct coenzyme form is required.

What does each solution contain? 

Each 10ml solution contains either cyanocobalamin or methylcobalamin at 1mg/ml, with no other active ingredients.

Is this compound approved for human use? 

In the US, this product is supplied for laboratory research purposes only. Note that cyanocobalamin injection is also an FDA-approved prescription pharmaceutical for treating B12 deficiency — this research-grade solution is not that product and is not sold for therapeutic use. Methylcobalamin is available OTC in oral/sublingual forms. No FDA-approved injectable methylcobalamin drug product exists in the US; compounded injectable preparations require a prescription. Researchers should verify compliance with applicable regulations before ordering.

Are cyanocobalamin and methylcobalamin interchangeable? 

No. Despite sharing the same core B12 structure, they differ in the chemical group attached to the cobalt atom, which affects stability and direct coenzyme activity. Research findings on one form cannot be assumed to apply directly to the other.

What purity standard does BehemothLabz provide for this compound? 

Every batch is independently tested by third-party laboratories. Both forms are verified at ≥99% purity by HPLC analysis. A Certificate of Analysis confirming purity and molecular identity is available per lot.

How should Vitamin B12 (Cyanocobalamin / Methylcobalamin) be stored? 

Store at 2–8°C in a dry, dark environment protected from light. Check the batch Certificate of Analysis for lot-specific guidance. Do not use it if the seal has been compromised.

References

1. 1. Green R, Allen LH, Bjørke-Monsen AL, et al. Vitamin B12 deficiency. Nat Rev Dis Primers. 2017;3:17040. Available at: https://pubmed.ncbi.nlm.nih.gov/28660890/
   2. Okada K, Tanaka H, Temporin K, et al. Methylcobalamin increases Erk1/2 and Akt activities through the methylation cycle and promotes nerve regeneration in a rat sciatic nerve injury model. Exp Neurol. 2010;222(2):191–203. Available at: https://pubmed.ncbi.nlm.nih.gov/20045411/

Please click here to access instructions on how to make a payment.

How to Pay