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B12 (Methylcobalamin) 10mg specification card: catalogue reference, CAS number, molecular formula and purity

Cofactors & Small Molecules

B12 (Methylcobalamin) 10mg

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Methylcobalamin is the methylated coenzyme form of vitamin B12, the cofactor for methionine synthase. It is studied for one-carbon metabolism, homocysteine remethylation and myelin maintenance.

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  • Same-day dispatch before 2 PM PT from British Columbia, Canada
  • Free shipping over CA$200
  • Batch-specific COA with every lot
  • Priced in Canadian dollars

Specification

Catalogue number
OP-076
Purity specification
>99%
Fill
10mg
CAS number
13422-55-4
Molecular formula
C₆₃H₉₁CoN₁₃O₁₄P
Molecular weight
1,344.4 g/mol
Form
Lyophilized powder
Solubility
Soluble in bacteriostatic water
Shelf Life
24 months from date of manufacture

About B12 (Methylcobalamin) 10mg

Vitamin B12 exists in several forms, and methylcobalamin is the one that functions directly as a cofactor without requiring intracellular conversion, which distinguishes it from cyanocobalamin in experimental work. It supports methionine synthase in the remethylation of homocysteine to methionine, the reaction that regenerates S-adenosylmethionine and links B12 status to methylation capacity generally. The cobalt-corrin structure makes it light-sensitive, so the amber vial and dark storage are functional requirements rather than convention.

Storage and reconstitution

Store lyophilized peptide at -20°C in a dry, dark environment. Reconstitute in bacteriostatic water. Once reconstituted, store at 2-8°C and use within 30 days. Avoid repeated freeze-thaw cycles. Lyophilized powder is stable at room temperature for shipping and short-term storage.

Shipping within Canada

Orders placed before 2:00 PM Pacific on a business day are packed and dispatched the same day. Orders placed after that cut-off, or on a weekend or statutory holiday, are dispatched on the next business day. Parcels leave British Columbia, Canada and travel entirely within the country, so nothing on this order crosses a border, clears customs or is held by CBSA. Orders over CA$200 ship free; see the shipping page for transit times by province.

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