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  4. Closantel

Closantel is a halogenated salicylanilide with a potent anti-parasitic activity. Closantel is a potent and highly specific Onchocerca volvulus chitinase (OvCHT1) inhibitor with an IC50 of 1.6 μM and a Ki of 468 nM. Closantel inhibits the O. volvulus L3 to L4 molt of developing.

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CAS No. : 57808-65-8

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Customer Review

Based on 11 publication(s) in Google Scholar

Other Forms of Closantel:

Closantel Related Antibodies

Top Publications Citing Use of Products

    Closantel purchased from MedChemExpress. Usage Cited in: Acta Pharm Sin B. 2025 Mar;15(3):1535-1551.

    HEK293T cells were pretreated with 20 μmol/L Closantel for 1 h and then infected with indicated MOI HSV-1 for 24 h. HSV-1 RNA replicates were detected by qPCR.

    Closantel purchased from MedChemExpress. Usage Cited in: Cancers. 2020 Mar 2;12(3):575.  [Abstract]

    Representative images of embryos before and after treated with DMSO (vehicle), PTK787, WNK463 or Closantel (0.15 μM).

    Closantel purchased from MedChemExpress. Usage Cited in: Cancers. 2020 Mar 2;12(3):575.  [Abstract]

    Representative H&E-stained sections of intestinal tract of RPIA transgenic fish treated with Closantel (1.5 μM).

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    Amebae Coccidia Leishmania Mite Plasmodium Toxoplasma Trypanosoma Schistosome

    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Closantel is a halogenated salicylanilide with a potent anti-parasitic activity. Closantel is a potent and highly specific Onchocerca volvulus chitinase (OvCHT1) inhibitor with an IC50 of 1.6 μM and a Ki of 468 nM. Closantel inhibits the O. volvulus L3 to L4 molt of developing[1][2].

    Cellular Effect
    Cell Line Type Value Description References
    HEK293 CC50
    75 μM
    Compound: Closantel
    Cytotoxicity against HEK293 cells assessed as reduction in cell viability after 48 hrs by Alamar Blue reporter assay
    Cytotoxicity against HEK293 cells assessed as reduction in cell viability after 48 hrs by Alamar Blue reporter assay
    		[PMID: 30392371]
    HEK293 IC50
    3 μM
    Compound: Closantel
    Inhibition of human OCT1 expressed in HEK293 cells assessed as decrease in uptake of ASP+ after 2 mins by fluorescence assay
    Inhibition of human OCT1 expressed in HEK293 cells assessed as decrease in uptake of ASP+ after 2 mins by fluorescence assay
    		[PMID: 28230985]
    In Vitro

    Closantel, a known anthelmintic drug, is highly specific forfilarial family chitinases compared to those fromprotozoans and the human chitinase, human chitotriosidase[1].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

    Closantel Related Antibodies
    Molecular Weight

    663.07

    Formula

    C22H14Cl2I2N2O2
    CAS No.
    Appearance

    Solid

    Color

    White to off-white

    SMILES

    O=C(NC1=CC(Cl)=C(C(C2=CC=C(Cl)C=C2)C#N)C=C1C)C3=CC(I)=CC(I)=C3O
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage
    Powder -20°C 3 years
    4°C 2 years
    In solvent -80°C 2 years
    -20°C 1 year
    Solvent & Solubility
    In Vitro: 

    DMSO : ≥ 100 mg/mL (150.81 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    *"≥" means soluble, but saturation unknown.

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 1.5081 mL 7.5407 mL 15.0814 mL
    5 mM 0.3016 mL 1.5081 mL 3.0163 mL
    View the Complete Stock Solution Preparation Table

    * Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
    Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

    • Molarity Calculator

    • Dilution Calculator

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

    Mass
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    Volume
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    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start)

    C1

    ×
    Volume (start)

    V1

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    C2

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    Volume (final)

    V2

    In Vivo:

    Select the appropriate dissolution method based on your experimental animal and administration route.

    For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
    To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
    The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

    • Protocol 1

      Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

      Solubility: ≥ 2.5 mg/mL (3.77 mM); Clear solution

      This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

      Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

      Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
    • Protocol 2

      Add each solvent one by one:  10% DMSO    90% Corn Oil

      Solubility: ≥ 2.5 mg/mL (3.77 mM); Clear solution

      This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

      Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

    In Vivo Dissolution Calculator
    Please enter the basic information of animal experiments:

    Dosage

    mg/kg

    Animal weight
    (per animal)

    g

    Dosing volume
    (per animal)

    μL

    Number of animals

    Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
    Please enter your animal formula composition:
    %
    DMSO +
    % 
    +
    %
    Tween-80 +
    %
    Saline
    Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
    The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
    Calculation results:
    Working solution concentration: mg/mL
    Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
    The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
    Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
     If the continuous dosing period exceeds half a month, please choose this protocol carefully.
    Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
    Purity & Documentation
    References

    Complete Stock Solution Preparation Table

    * Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
    Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    DMSO 1 mM 1.5081 mL 7.5407 mL 15.0814 mL 37.7034 mL
    5 mM 0.3016 mL 1.5081 mL 3.0163 mL 7.5407 mL
    10 mM 0.1508 mL 0.7541 mL 1.5081 mL 3.7703 mL
    15 mM 0.1005 mL 0.5027 mL 1.0054 mL 2.5136 mL
    20 mM 0.0754 mL 0.3770 mL 0.7541 mL 1.8852 mL
    25 mM 0.0603 mL 0.3016 mL 0.6033 mL 1.5081 mL
    30 mM 0.0503 mL 0.2514 mL 0.5027 mL 1.2568 mL
    40 mM 0.0377 mL 0.1885 mL 0.3770 mL 0.9426 mL
    50 mM 0.0302 mL 0.1508 mL 0.3016 mL 0.7541 mL
    60 mM 0.0251 mL 0.1257 mL 0.2514 mL 0.6284 mL
    80 mM 0.0189 mL 0.0943 mL 0.1885 mL 0.4713 mL
    100 mM 0.0151 mL 0.0754 mL 0.1508 mL 0.3770 mL
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    Closantel Related Classifications

    Help & FAQs
    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

    Keywords:

    Closantel57808-65-8ParasitehalogenatedsalicylanilideOnchocercavolvuluschitinaseOvCHT1O. volvulusL3L4fromprotozoanschitotriosidaseInhibitorinhibitorinhibit

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