Beta-nicotinamide adenine dinucleotide (NAD, NAD+; oxidized form free acid)   Enzyme cofactors (NADPH, NADP, NADH and NAD) from Prozomix can be purchased either individually, as shown here, or as part of a convenient and very cost-effective enzyme cofactor kit (PRO-FACS). The enzyme cofactor kits available from Prozomix comprise either 0.1 g, 1 g or 5 g of each of the four common cofactors (NADPH, NADP, NADH and NAD). The cofactors supplied by Prozomix are very cost-effective and of high purity, and thus suitable for all in vitro research applications, including biochemical research, biocatalysis (including cofactor recycling) and in the preparation of analytical reagents. For more information contact technical@prozomix.com