Catalog No.S1691

For research use only.

Praziquantel is an anthelmintic effective against flatworms.

Praziquantel Chemical Structure

CAS No. 55268-74-1

Selleck's Praziquantel has been cited by 2 Publications

1 Customer Review

Purity & Quality Control

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Biological Activity

Description Praziquantel is an anthelmintic effective against flatworms.

Protocol (from reference)

Solubility (25°C)

In vitro

DMSO 63 mg/mL
(201.65 mM)
Water Insoluble
Ethanol '63 mg/mL

* 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 312.41


CAS No. 55268-74-1
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles C1CCC(CC1)C(=O)N2CC3C4=CC=CC=C4CCN3C(=O)C2

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

mg/kg g μL

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO % % Tween 80 % ddH2O

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

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.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT04635553 Recruiting Drug: Praziquantel 600 milligram Schistosomiasis Institut de Recherche pour le Developpement August 11 2020 --
NCT04314037 Completed Drug: Cesol (Test)|Drug: Biltricide (Reference) Healthy Merck Healthcare KGaA Darmstadt Germany an affiliate of Merck KGaA Darmstadt Germany June 17 2020 Phase 1
NCT03870204 Completed Diagnostic Test: POC-CCA rapid urine test Aged ≥2 Years in Schistosomiasis Affected Areas Ina-Respond|National Institute of Health Research and Development Ministry of Health Republic of Indonesia|The National Institute of Allergy and Infectious Diseases United States September 4 2019 --
NCT03437447 Completed Drug: Cisticid|Drug: Biltricide Healthy Merck KGaA Darmstadt Germany June 18 2018 Phase 1
NCT02194712 Completed Other: Urine CAA detection Schistosomiasis Meta Roestenberg|Leiden University Medical Center January 2015 --

(data from, updated on 2022-01-17)

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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