Keywords: Mecobalamin.svg Skeletal formula of mecobalamin Created using http //www acdlabs com/download/chemsk html ACD/ChemSketch 8 0 and http //www inkscape org Inkscape Own work from ChEBI http //www ebi ac uk/chebi/searchId do chebiId CHEBI 28115 28115 2007-04-30 Fvasconcellos 18 38 30 April 2007 UTC Vitamin B12 |