NAD+ is a high-purity synthetic coenzyme, a critical molecule composed of nicotinamide mononucleotide and adenine linked by phosphate groups, designed exclusively for laboratory research. This essential cofactor is utilized to investigate cellular energy metabolism, DNA repair, and signaling pathways. Supplied as a lyophilized powder or solution for reconstitution, NAD+ provides researchers with a precise tool to study its roles in redox reactions, sirtuin activation, and mitochondrial function in experimental models.