Vitamin B12
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Vitamin B12, also known as cobalamin or extrinsic factor, is a water-soluble vitamin involved in metabolism. One of eight B vitamins, it serves as a vital cofactor in DNA synthesis and both fatty acid
A vitamin B12 solution (hydroxocobalamin) in a multi-dose bottle, with a single dose drawn up into a syringe for injection. Preparations are usually bright red.
A blister pack of 500 μg methylcobalamin tablets
Methylcobalamin (shown) is a form of vitamin B12. Physically it resembles the other forms of vitamin B12, occurring as dark red crystals that freely form cherry-colored transparent solutions in water.
Structure of human TCII in complex with Vitamin B12. HC and IF show homologous protein folds.
Hydroxocobalamin
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Hydroxocobalamin, also known as hydroxycobalamin, is a form of Vitamin B12 found in food and used as a dietary supplement. As a supplement it is used to treat vitamin B12 deficiency including pernicio
Vitamin B12
…cyanocobalamin, the adenosyl ligand in vitamin B12 is replaced by cyanide. hydroxocobalamin, the adenosyl ligand in vitamin B12 is replaced by a hydroxide. methylcobalamin, the adenosyl ligand in vitamin B12 is replaced by a methyl group…
Hydroxocobalamin at standard conditions is a solid composed of dark red crystals.