Riboflavin (vitamin B₂)

• Riboflavin acts biochemically in the form of flavin mononucleotide (FMN) or flavin adenine dinucleotide (FAD).  FMN and FAD serve as prosthetic groups of oxidoreductase enzymes (flavoproteins; eg., a-amino acid oxidase, xanthine oxidase, succinate dehydrogenase).