Description; General description; Vitamin B12 cobalamin refers to a group of chemically-related cobalt containing molecules. The physiologically active forms of vitamin B12 include methylcobalamin and adenosylcobalamin, whereas hydroxocobalamin (vitamin B12a, OHCbl) and cyanocobalamin (CNCbl) are storage and delivery forms.; Application; Coenzyme B12 has been used as a supplement for culturing plasmid variants in in vivo assay of yvrC-lacZ fusions.; Packaging; 1 g in poly bottle; 25, 100, 250 mg in poly bottle; Biochem/physiol Actions; Vitamin B12 cobalamin is involved in DNA synthesis and fatty acid synthesis. It also plays a vital role as a coenzyme in the conversion of mitochondrial methylmalonyl co-enzyme A to succinyl co-enzyme A.; Other Notes; Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. C0884.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.