PHENAZINE METHOLSULPHATE
Phenazine methosulphate (PMS) is used widely as an intermediate electron carrier for coupling the production of NADH or NADPH to the reduction of tetrazolium salts to coloured formazans.
Phenazine methosulfate is used with ascorbic acid to determine nitric oxide reductase activity. Phenazine methosulfate has been used: as a component of succinate dehydrogenase enzyme substrate solution
Phenazine m ethosulfate (PMS) acts as a good electron acceptor. PMS is reduced non-enzymatically by (nicotinamide adenine dinucleotide) NADH and (nicotinamide adenine dinucleotide phosphate) NADPH.