B-12 (Methylcobalamin) 10mg — Research Use Only

B-12 (Methylcobalamin) is supplied as a lyophilized powder in a 3 ml vial at 10mg per vial for use as a laboratory reference standard. Methylcobalamin is the methylated, biologically active cofactor form of cobalamin (vitamin B-12) and serves as the coenzyme for methionine synthase in one-carbon metabolism, supporting the conversion of homocysteine to methionine and the regeneration of tetrahydrofolate in cell-free and cell-culture experimental systems. This material is intended solely for in-vitro biochemical characterization, analytical method development, enzyme cofactor assays, stability and photodegradation studies, and cell-culture media supplementation research. Methylcobalamin is light sensitive; vials should be protected from light and handled under reduced-light conditions during reconstitution and analysis. Not for use in any living organism. Not for human or veterinary use, and not for diagnostic or therapeutic use.