CAS No. 299-11-6

Batch: Purity:98
Phenazine methosulfate Chemical Structure
Chemical Structure
Check the Phenazine methosulfate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 299-11-6
Molecular Formula

C13H11N2.CH3O4S

Molecular Weight (MW) 306.34
SMILES C[N+]1=C2C=CC=CC2=NC3=CC=CC=C31.COS(=O)(=O)[O-]

Biological Activity

Phenazine methosulfate is an intermediate electron carrier and redox mediator that couples the oxidation of NADH or NADPH to the reduction of tetrazolium salts. In biological systems, reduced phenazine methosulfate reacts with molecular oxygen to generate superoxide anions, mediating electron transfer and enabling colorimetric detection in cellular metabolic activity and viability assays.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 61 mg/mL (199.12 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.