CAS No. 538-71-6

Batch: Purity:99.96
Domiphen Bromide Chemical Structure
Chemical Structure
Check the Domiphen Bromide product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name dodecyl-dimethyl-(2-phenoxyethyl)azanium bromide
CAS Number 538-71-6
Molecular Formula

C22H40NO.Br

Molecular Weight (MW) 414.46
SMILES CCCCCCCCCCCC[N+](C)(C)CCOC1=CC=CC=C1.[Br-]
InChIKey OJIYIVCMRYCWSE-UHFFFAOYSA-M

Ordering Information

Biological Activity

Domiphen bromide is a quaternary ammonium antiseptic that acts as a cationic surfactant. It targets and integrates into negatively charged microbial cell membranes, disrupting lipid bilayer integrity and inducing the leakage of intracellular components. This membrane disruption destabilizes the osmotic balance and impairs cellular viability, exerting broad-spectrum antimicrobial activity against bacteria and fungi.

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 83 mg/mL (200.26 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 83 mg/mL
Ethanol 83 mg/mL
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.