Methyl B12
Analytical results for lot MB100VAS0426 (10 mL vial), third-party tested by AxisPharm, LLC and reported 2026-06-15.
| Assay | Method | Result |
|---|---|---|
| Purity | HPLC-UV (208 nm) | 99.2% |
| Identity | LC-MS (ESI+) | 1345.3 [M+H] |
| Endotoxin | LAL assay | 0.055 EU/mg |
Lot record
| Lot number | MB100VAS0426 |
|---|---|
| Compound | Methyl B12 |
| Format | 10 mL vial |
| Label claim | 100 mg |
| Measured content | 101.2 mg |
| Expected mass | 1344.4 g/mol |
| Report date | 2026-06-15 |
| Sample received | 2026-06-08 |
| Manufactured | 2026-04 |
| Best before | 2028-04 |
| Manufacture | GMP-compliant peptide manufacturing facility, United States |
| Third-party analysis | AxisPharm, LLC |
| Status | Current — in stock |
Compound
The methylated cobalamin cofactor for methionine synthase, studied in one-carbon metabolism.
Methyl B12 specification →The certificate for this lot
The results above are published in full. The certificate itself is the testing laboratory’s document, and we supply it per batch rather than as a public download — so a certificate can only ever travel with the material it describes. If you hold or are purchasing lot MB100VAS0426, request it and we will send it.
Request the certificate for MB100VAS0426 →All compounds supplied by BioIntegrity are intended strictly for laboratory research and educational use. Not for human or animal consumption. Not for diagnostic, therapeutic, or clinical use. No statement on this website has been evaluated by the Food and Drug Administration. Purchaser affirms that products are acquired solely for legitimate laboratory research and assumes full responsibility for lawful handling, storage, and disposal.