Methylcobalamin B12 Vial from Xcel Peptides

Xcel Peptides supplies Methylcobalamin B12 as a research-grade cobalamin compound in a sterile vial for laboratory use. We test every batch independently before release, and we publish the certificate of analysis on this page, matched to the batch number on your vial.

What Is Methylcobalamin

Methylcobalamin is the naturally active form of vitamin B12, a cobalt-containing corrinoid cofactor. Unlike cyanocobalamin, which requires enzymatic conversion before cells can use it, this form already carries a methyl group and works directly in methylation pathways. Researchers rely on that distinction when they need the bioactive form rather than a precursor that depends on in-vivo conversion.

Specifications

The vial holds a sterile solution at research grade. We verify it through third-party HPLC and identity analysis, and we document every batch with a matched COA. Refrigerate the vial and protect it from light. We ship every order cold-chain with tracking.

Research Applications

Researchers study this cofactor primarily in one-carbon metabolism and methylation pathway research. It supports methionine synthase, an enzyme that drives methylation and clears homocysteine, and methylmalonyl-CoA mutase, which supports fatty acid metabolism. These reactions connect to broader research on red blood cell formation, DNA synthesis, and myelin sheath maintenance around nerves. Scientists also investigate cellular redox homeostasis using this compound in preclinical models.

These describe research applications, not therapeutic claims. The FDA has not evaluated this product, and researchers should not use it to diagnose, treat, cure, or prevent any condition.

Why Buy Methylcobalamin B12 From Xcel Peptides

The B12 market gets confusing fast, since the same compound sells as cyanocobalamin, methylcobalamin, or hydroxocobalamin, and suppliers don’t always specify which form ships in the vial. Xcel Peptides confirms the active methylated form through independent testing, so you know exactly what you’re working with.

We ship every order with cold-chain packaging as standard. This solution degrades faster under heat and light exposure than the lyophilized powder does, so temperature control during transit protects its integrity.

Storage and Handling

Refrigerate the vial and keep it sealed and shielded from light, since cobalamin compounds are light-sensitive. Avoid repeated warming and cooling, since temperature cycling accelerates degradation. Once opened, follow standard sterile handling practice for the remainder of its use.

Verifying Your COA

Check three things on the COA before you use this product. First, confirm the batch number matches your vial. Second, confirm the test date is recent. Third, confirm the compound identity shows the methylated form specifically, not a different cobalamin variant. If you need archived data for a previous lot, contact our team and we’ll pull it for you.

Disclaimer (place directly under description): Xcel Peptides supplies Methylcobalamin B12 for laboratory and research use only. It is not a drug, dietary supplement, or food, and researchers should not use it for human or animal consumption, or for diagnostic or therapeutic use. Nothing on this page constitutes medical advice.

H2: Frequently Asked Questions

What is Methylcobalamin B12? It’s the naturally active, bioavailable form of vitamin B12. Xcel Peptides supplies it in a sterile research-grade vial for laboratory use.

Does this product come with a COA? Yes. Xcel Peptides ships every vial with a batch-matched certificate of analysis confirming identity and purity.

How should I store it? Refrigerate the vial, keep it sealed, protect it from light, and avoid repeated temperature cycling.

What’s the difference between methylcobalamin and cyanocobalamin? Methylcobalamin is the natural, active form of B12 that cells can use directly, while cyanocobalamin is synthetic and requires conversion before use.

How fast does Xcel Peptides ship this product? We ship most orders within 1 to 2 business days, with cold-chain packaging and tracking included.