Dequalinium Chloride

Catalog No.S4066

Dequalinium Chloride Chemical Structure

Molecular Weight(MW): 527.57

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.

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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]


Animal Research:


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  • Animal Models: Mice bearing bladder MB49 tumors
  • Formulation: Dissolved in water using a bath sonicator
  • 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 powder
in solvent
Synonyms N/A

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Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02242695 Completed Vulvovaginal Candidiasis Medinova AG|Mahidol University November 2014 Phase 4
NCT01125410 Completed Bacterial Vaginosis Medinova AG January 2007 Phase 3

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PKC Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID