NADH

NADH and NAD+ are a redox pair in cells. NADH is the reduced form of coenzyme 1 NAD, and NAD+ is its oxidized form. In the redox reaction, NADH serves as the donor of hydrogen and electrons, and NAD+ serves as the acceptor of hydrogen and electrons, participating in physiological processes such as respiration, photosynthesis, and alcohol metabolism. They participate in life activities as coenzymes in many redox reactions in organisms and transform each other. NADH is widely used in various biochemical diagnostic reagents to detect changes in absorbance at OD340nm.