1-Methoxy-5-methylphenazinium methyl sulphate ≥95%, Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
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M-Clarity™ quality level = MQ200

M8640-100MG M8640-500MG
M8640-100MGEA 295 GBP
M8640-100MG M8640-500MG
1-Methoxy-5-methylphenazinium methyl sulphate ≥95%, Sigma-Aldrich®
1-Methoxy-5-methylphenazinium methyl sulphate

1-Methoxy-5-methylphenazinium methyl sulfate (MPMS) is a photochemically stable electron-transport mediator between NAD(P)H and tetrazolium dyes. The reduced form of MPMS converts tetrazolium salt to purple precipitate formazan. It is a very stable and non-enzymic electron carrier that mediates electron transfer by dehydrogenases in vitro to various electron acceptors such as tetrazolium dyes or the electrode of an enzymic electric cell.


  • 1-Methoxy-5-methylphenazinium methyl sulfate has been used as a component of buffers or solutions for the assay of lactate dehydrogenase and muscle succinate dehydrogenase.

Formula: C₁₅H₁₆N₂O₅S
Storage Temperature: Room Temperature
MDL Number: MFCD00040648
CAS Number: 65162-13-2
EINECS: 265-579-6
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Specification Test Results

Appearance (Colour) Red to Brown
Appearance (Form) Powder
Solubility (Colour) Red
Solubility (Turbidity)
1 mg/ml, H₂O
Clear
Proton NMR spectrum Conforms to Structure
Nitrogen ≥7.9%

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