title: Spectroscopic analysis of vitamin B12 derivatives.
mesh_terms: D002942:Circular Dichroism; D003035:Cobalt; D013050:Spectrometry, Fluorescence; D013053:Spectrophotometry; D014805:Vitamin B 12 / Q000031:analogs & derivatives* / Q000032:analysis
chemical_list: D003035:Cobalt; D014805:Vitamin B 12