Dequalinium Chloride

Catalog No.S4066

For research use only.

Dequalinium Chloride is a PKC inhibitor with IC50 of 7-18 μM, and also a selective blocker of apamin-sensitive K+ channels with IC50 of 1.1 μM.

Dequalinium Chloride Chemical Structure

CAS No. 522-51-0

Selleck's Dequalinium Chloride has been cited by 2 Publications

Purity & Quality Control

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Biological Activity

Description Dequalinium Chloride is a PKC inhibitor with IC50 of 7-18 μM, and also a selective blocker of apamin-sensitive K+ channels with IC50 of 1.1 μM.
PKC [1]
7 μM-18 μM
In vitro

Dequalinium chloride (DECA) is a cationic, lipophilic compound with structure similar to the dye rhodamine 123. DECA is selectively accumulated and retained within the mitochondria of carcinoma cells where it acts as a mitochondrial poison by blocking mitochondrial enzymes which can then disrupt cellular energy production, eventually resulting in cell death. Dequalinium Chloride is a blocker of ganglionic transmission (EC50 = 2 μM). [1] Dequalinium is a potent inhibitor of apamin-sensitive K+ channels in hepatocytes and of nicotinic responses in skeletal muscle. Dequalinium blocks angiotensin II-evoked K+ loss with an IC50 of 1.5 μM and also inhibited125I - monoiodoapamin binding with Ki of 1.1 μM. [2] Dequalinium produces a rapid and reversible inhibition of the slow apamin-sensitive component of the afterhyperpolarization (AHP) which follows a single action potential in cultured rat sympathetic neurones. [3] Dequalinium Chloride (DECA) is a dicationic lipophilic PKC inhibitor. When exposed to UV light, DECA covalently binds to and irreversibly inhibits PKCα and PKCβ. [4]

In vivo In mice bearing bladder MB49 tumors, Dequalinium chloride (2 mg/kg/d, i.p.) displays anticarcinoma activity with T/C of 210%. [5]

Protocol (from reference)

Animal Research:


  • Animal Models: Mice bearing bladder MB49 tumors
  • Dosages: 2 mg/kg/d
  • Administration: i.p.
  • (Only for Reference)

Solubility (25°C)

In vitro

DMSO 0.025 mg/mL
(0.04 mM)
Water Insoluble
Ethanol 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 Information

Molecular Weight 527.57


CAS No. 522-51-0
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC1=[N+](C2=CC=CC=C2C(=C1)N)CCCCCCCCCC[N+]3=C(C=C(C4=CC=CC=C43)N)C.[Cl-].[Cl-]

In vivo Formulation Calculator (Clear solution)

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Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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