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- n. A natural analogue of vitamin B12, a basic member of the cobalamin family of compounds, with an intense red colour.
Sorry, no etymologies found.
Several substances with similar formulas and with the characteristic hematinic action have been isolated and designated: B12a, hydroxocobalamin; B12b, aquacobalamin; B12c, nitritocobalamin; B12r, cob (II) alamin; B12s, cob (I) alamin; B12III, factors A and V1a (cobyric acid) and pseudovitamin B12.
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