Cellular Research
Methyl B12
All products listed on this site are for research purposes only — not for human dosing, injection, or ingestion.
Format10mL Vial
Sizes1
Purity99.2%
SKUVIAL-METHYL-B1
Ships from the USA · Free US shipping over $200 · Lyophilized solids are ambient-stable in transit.
Lot MB100VAS0426 · 99.2% (LC-MS)
AxisPharm, LLC · reported Jun 15, 2026 · Endotoxin 0.055 EU/mg
View COA
Research use only
Ships from USA
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Specifications
| Compound | Methyl B12 |
|---|---|
| CAS number | 13422-55-4 |
| Molecular formula | C63H91CoN13O14P |
| Molecular weight | 1344.4 g/mol |
| Class | small molecule — cobalamin |
| Format | 10mL Vial |
| Available sizes | 100mg |
| Form | Lyophilized powder |
| Research area | Cellular Research |
| Purity (UV) | 100mg: 99.2% |
Identity data cross-checked against PubChem and 2 further reference sources.
Storage & handling
Supplied as a lyophilized solid. Store sealed at −20 °C for long-term holding, or refrigerated (2–8 °C) short term, protected from light and moisture. See the storage reference.
Methyl B12 certificate of analysis
This listing has a published certificate: LC-MS identity and UV purity, with the lot number and the testing laboratory named. It is also in the COA library.
| Size | Lot | UV purity | Reported |
|---|---|---|---|
| 100mg | MB100VAS0426 | 99.2% | Jun 15, 2026 |
Each lot number opens its certificate (PDF). Issued by AxisPharm, LLC and provided by our supplier (where the certificates come from). Endotoxin (LAL), where the lab reported it, is printed on the certificate.
What a lot number on a vial does and doesn't prove →Observed vs theoretical mass: what an LC-MS identity result confirms →
Shipping
Orders ship from the USA. Lyophilized solids are stable at ambient temperature in transit — moisture, not brief warmth, is the storage risk — so the emphasis is on sealing rather than cold packs. Free US shipping on orders over $200. Full details on the shipping page.
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