MUSCAT CHEMICAL TAG::
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 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.