Benzethonium Chloride

Catalog No.S4162

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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Benzethonium Chloride Chemical Structure

Benzethonium Chloride Chemical Structure
Molecular Weight: 448.08

Validation & Quality Control

Quality Control & MSDS

Product Information

Product Description

Biological Activity

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.
Targets α4β2 nAChRs [1] α7 nAChRs [1]
IC50 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]

Protocol(Only for Reference)

Cell Assay: [5]

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.

Animal Study: [5]

Animal Models established FaDu tumors in SCID mice.
Formulation PBS
Dosages 5 mg/kg
Administration intraperitoneal injection

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Coates KM, et al. Br J Pharmacol, 2001, 134(4), 871-879.

[2] Zaman Z, et al. Eur J Clin Chem Clin Biochem, 1997, 35(8), 603-607.

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Chemical Information

Download Benzethonium Chloride SDF
Molecular Weight (MW) 448.08


CAS No. 121-54-0
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
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)
* <1 mg/ml means slightly soluble or insoluble.
* 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 Name Benzenemethanaminium, N,N-dimethyl-N-[2-[2-[4-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy]ethyl]-, chloride (1:1)

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