Date published: 2026-4-5

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Closantel (CAS 57808-65-8)

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Alternate Names:
N-(5-Chloro-4-[(R,S)-(4-chlorophenyl)cyanomethyl]-2-methylphenyl)-2-hydroxy-3,5-diiodobenzamide
Application:
Closantel is potentially useful for studying P-glycoprotein interactions in vitro
CAS Number:
57808-65-8
Purity:
≥98%
Molecular Weight:
663.07
Molecular Formula:
C22H14Cl2I2N2O2
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Closantel belongs to the benzimidazole class of compounds. With a history spanning over three decades, closantel has maintained its widespread usage in veterinary medicine. In vitro studies have confirmed its efficacy against diverse parasite species. The mechanism of action employed by closantel involves the inhibition of fumarate reductase, an essential enzyme involved in fumarate synthesis. Through this inhibition, closantel disrupts the energy metabolism of parasites, leading to the accumulation of fumarate and ultimately resulting in their demise.


Closantel (CAS 57808-65-8) References

  1. Closantel nano-encapsulated polyvinyl alcohol (PVA) solutions.  |  Vega, AF., et al. 2016. Pharm Dev Technol. 21: 636-41. PMID: 26330226
  2. First report of closantel treatment failure against Fasciola hepatica in cattle.  |  Novobilský, A. and Höglund, J. 2015. Int J Parasitol Drugs Drug Resist. 5: 172-7. PMID: 26448903
  3. Closantel Suppresses Angiogenesis and Cancer Growth in Zebrafish Models.  |  Zhu, XY., et al. 2016. Assay Drug Dev Technol. 14: 282-290. PMID: 27045536
  4. Closantel; a veterinary drug with potential severe morbidity in humans.  |  Tabatabaei, SA., et al. 2016. BMC Ophthalmol. 16: 207. PMID: 27899086
  5. Electrochemical determination of closantel in the commercial formulation by square-wave adsorptive stripping voltammetry.  |  Brycht, M., et al. 2017. Monatsh Chem. 148: 463-472. PMID: 28344363
  6. Efficacy of herbal extracts and closantel against fenbendazole-resistant Haemonchus contortus.  |  Dixit, AK., et al. 2019. J Helminthol. 93: 529-532. PMID: 30039771
  7. Copper oxide and closantel prevent alterations in hepatic energetic metabolism and reduce inflammation in Haemonchus contortus infection.  |  Salvadori Schafer, A., et al. 2019. Exp Parasitol. 204: 107726. PMID: 31299264
  8. Selective determination of closantel by artificial neural network-genetic algorithm optimized molecularly imprinted polypyrrole using UV-visible spectrophotometry.  |  Nezhadali, A., et al. 2020. Spectrochim Acta A Mol Biomol Spectrosc. 243: 118779. PMID: 32810780
  9. Efficacy of Oxyclozanide and Closantel against Rumen Flukes (Paramphistomidae) in Naturally Infected Sheep.  |  García-Dios, D., et al. 2020. Animals (Basel). 10: PMID: 33105640
  10. Analytical Separation of Closantel Enantiomers by HPLC.  |  Saleh, B., et al. 2021. Molecules. 26: PMID: 34885866
  11. Prophylactic Effects of Ivermectin and Closantel Treatment in the Control of Oestrus ovis Infestation in Sheep.  |  Bello, HJS., et al. 2021. Front Vet Sci. 8: 798942. PMID: 35118151
  12. Effects of Ferula asafetida, closantel, albendazole, oxfendazole, and ivermectin against Haemonchus contortus in goats and sheep.  |  Jabbar, A., et al. 2022. Trop Anim Health Prod. 54: 107. PMID: 35187616
  13. Closantel retinal toxicity: Recovery from severe vision loss after corticosteroid therapy.  |  Behboudi, H., et al. 2022. Eur J Ophthalmol. 11206721221111887. PMID: 35799445
  14. Determination of closantel enantiomers in black goat plasma and their pharmacokinetic characteristics.  |  Saleh, B., et al. 2022. J Chromatogr B Analyt Technol Biomed Life Sci. 1210: 123414. PMID: 36209557
  15. The first fluorescent sensor for the detection of closantel in meat.  |  Zeng, C., et al. 2023. Talanta. 258: 124413. PMID: 36871517

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Closantel, 50 mg

sc-202548
50 mg
$124.00