b-Nicotinamide-adenine Dinucleotide Phosphate, Reduced, 4Na Yellow solid. HYGROSCOPIC. A ubiquitous coenzyme that acts as an electron donor in many reactions utilizing dehydrogenase and reductase enzymes. It is generated by reduction of the electron acceptor NADP+. The following biological pathways involve NADPH: formation of carbohydrate from CO2 during photosynthesis, maintenance of high levels of reduced glutathione in erythrocytes, reduction of thioredoxin. Purity: ≥90% by HPLC; ≥93% by enzymatic assay. CAS 2646-71-1. Merck Index: 14, 6348
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