REVIEW One of the biologically active forms of vitamin B12; differing only by the substitution of a methyl for the cyano group. Coenzyme required in the biosynthesis of methionine. Vitamin (hematopoietic).
Gschoesser, Sigrid; Chemistry - A European Journal 2008, V14(12), P3605-3619
Dolphin, D., et al.: Methods Enzymol., 18, 34 (1971)
Beck, W.S., et al.: Am. J. Hematol., 34, 83 (1990)
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