Vitamin B12b, differing from cyanocobalamin (vitamin B12) in the presence of a hydroxyl ion in place of the cyanide ion at the sixth coordinate position on the cobalt atom. SEE ALSO: vitamin B12. SYN: hydroxocobemine.
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hy·droxo·co·bal·amin hī-'dräk-(.)sō-kō-'bal-ə-mən n a member C62H89CoN13O15P of the vitamin B12 group used in treating and preventing vitamin B12 deficiency
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n.
a cobalt-containing drug administered by injection to treat conditions involving vitamin B12 deficiency, such as pernicious anaemia. Trade names: Cobalin-H, Neo-Cytamen.
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hy·droxo·co·bal·a·min (OH-Cbl) (hi-drok″so-ko-balґə-min) [USP] a cobalamin derivative in which the substituent is a hydroxyl group; it is the naturally occurring form of vitamin B12 (see cyanocobalamin) and is sometimes used as a source of that vitamin.Medical dictionary. 2011.