Methylcobalamin (Vitamin B12 Coenzyme Form)
Coenzyme-form B12 cofactor for methylation-pathway research.
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This compound is not currently available for purchase. Submit a request to help guide future inventory and testing priorities.
Coenzyme-form B12 cofactor for methylation-pathway research.
Methylcobalamin is the biologically active coenzyme form of vitamin B12 and serves as the cofactor for methionine synthase. It is used in cell-culture and biochemical assays examining one-carbon metabolism, homocysteine remethylation, and folate-cycle intermediates. Light-sensitive; protect from light. Research use only.
- One-carbon and methionine-cycle metabolism
- Methylmalonyl-CoA mutase cofactor studies
- Homocysteine remethylation assays
- Independently verified for identity and purity on a batch-specific basis.
- Certificates of analysis publicly accessible by lot ID — never averaged.
- Sourced through qualified manufacturing partners and shipped from the United States.
- Fast shipping, always tracked, shipped from the United States.
Research and documentation
Where this lot is in the release process
- 01
Backorder confirmed
Your product is reserved from the incoming lot.
- 02
Arriving for testing · ~6 days
Incoming lot is expected to reach our testing queue within 6 days.
- 03
Sample en route to lab
A representative sample is being sent for independent analytical testing.
- 04
Independent testing · 3–5 days
Identity, purity, and applicable analytical testing are completed.
- 05
Results verified
Results are reviewed and the certificate of analysis is published.
- 06
Ready to ship
Verified inventory is released and your order is prepared for shipment.
Timeframes are estimates. No certificate from another lot is substituted while testing is in progress.

