Methylcobalamin (Methyl-B12) Testing
MW: 1344.38 g/mol
Active methylated form of B12; common in compounded blends.
What we test on Methylcobalamin (Methyl-B12)
Light-sensitive — degradation check at receipt.
Standard Vitamin / Cofactor Panel
- ✓HPLC quantitation per component
- ✓LC-MS identity
- ✓Endotoxin (LAL)
Common impurities in this category
Oxidized glutathione (GSSG), wrong B12 form, low-concentration fills, endotoxin.
Related Vitamin / Cofactor peptides
Cyanocobalamin (Vitamin B12)
1355.37 g/mol
Most common pharmaceutical form of B12 for injectables.
Glutathione (Reduced)
307.32 g/mol
Reduced L-glutathione (GSH); tripeptide antioxidant central to redox balance.
L-Carnitine
161.20 g/mol
Quaternary ammonium compound for fatty-acid mitochondrial transport.
Lipo C B12
Multi-component
Lipotropic injectable: choline, L-carnitine, L-inositol, L-methionine, methyl-B12.