Also available in 1 g, 5 mg, 10 mg, 25 mg, 100 mg, 500 mg and bulk. Please contact Fisher for quotes. beta-nicotinamide mononucleotide (NMN) is a natural nucleotide and a key intermediate in the synthesis of coenzyme I (NAD+). beta-nicotinamide mononucleotide is involved in a number of biochemical reactions in the human body, which are related to immunity and metabolism. Purity 99.66%