Benzethonium Chloride

Catalog No.S4162

Benzethonium Chloride Chemical Structure

Molecular Weight(MW): 448.08

Benzethonium chloride is a potent inhibitor of nAChRs, it inhibits α4β2 nAChRs and α7 nAChRs with IC50 of 49 nM and 122 nM, respectively.

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Description Benzethonium chloride is a potent inhibitor of nAChRs, it inhibits α4β2 nAChRs and α7 nAChRs with IC50 of 49 nM and 122 nM, respectively.
α4β2 nAChRs [1] α7 nAChRs [1]
49 nM 122 nM
In vitro

Benzethonium chloride inhibits acetylcholine responses in the α7 nAChRs in a mixed competitive and non-competitive manner but there is no voltage- or use-dependence of the response in either subtype. [1] Benzethonium chloride produces mixed-type inhibition of choline esterase and acetylcholine esterase-affecting both Fmax and Km, Choline esterase is about 10-fold more sensitive to benzethonium chloride than acetylcholine esterase. [2] Benzethonium chloride inhibits ICl(Ca) in response to 0.1 μM acetyl-beta-methylcholine in oocytes expressing m1 muscarinic receptors with IC50 of 0.88 μM. Benzethonium chloride combined with racemic S(+)/R(-) ketamine inhibits muscarinic signaling with a calculated IC50 of 15 μM and a Hill coefficient of 0.6. [3] Benzethonium (5 μM) significantly increases cytosolic Ca(2+)-concentration, decreases forward scatter and triggered annexin V-binding affecting some 30% of the erythrocytes. Benzethonium (5 μM) further significantly enhances the effect of glucose depletion on cytosolic Ca(2+)-concentration and annexin V-binding, but significantly blunts the effect of glucose depletion on forward scatter. Benzethonium (5 μM) significantly enhances lactic acid formation but not ceramide abundance. [4] Benzethonium chloride reduces cell viability with IC50 of 3.8 μM in FaDu, 42.2 μM in NIH 3T3, 5.3 μM in C666-1, and 17.0 μM in GM05757. Benzethonium chloride (9 μM) induces apoptosis and activates caspases after 12 hours in FaDu cells. [5]

In vivo Benzethonium chloride (5 mg/kg) ablates the tumor-forming ability of FaDu cells, delays the growth of xenograft tumors, and combined additively with local tumor radiation therapy in established FaDu tumors in SCID mice. [5]


Cell Research:[5]
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  • Cell lines: FaDu, C666-1, NIH 3T3 and GM05757 cell lines
  • Concentrations: 42.2 μM
  • Incubation Time: 48 hours
  • Method: Cells are seeded in 96-well plates at 5,000 per well in 100 μL of growth medium and allowed to incubate for 24 hours. Benzethonium chloride is then added, as indicated, in a total volume of 5 μL. After 48 hours, MTS assay is done according to the specifications of the manufacturer, with DMSO (0.1%)–treated cells as negative control and cisplatin (166.6 μM)–treated cells as positive control.
    (Only for Reference)
Animal Research:[5]
+ Expand
  • Animal Models: established FaDu tumors in SCID mice.
  • Formulation: PBS
  • Dosages: 5 mg/kg
  • Administration: intraperitoneal injection
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 90 mg/mL (200.85 mM)
Water 90 mg/mL (200.85 mM)
Ethanol 90 mg/mL (200.85 mM)

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 448.08


CAS No. 121-54-0
Storage powder
in solvent
Synonyms N/A

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AChR Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID