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Ethionamide

Name: Ethionamide
Brand: Selleck Chemicals
SKU: S1777

Synonyms: Bayer 5312

Catalog No.S1777 Purity: 99.9%

Ethionamide (Bayer 5312) is an antibiotic used in the treatment of tuberculosis.

Ethionamide Chemical Structure

CAS: 536-33-4

Purity & Quality Control

Batch: Purity: 99.9%

99.9

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Biological Activity

Description	Ethionamide (Bayer 5312) is an antibiotic used in the treatment of tuberculosis.

In vitro
In vitro	Ethionamide is a structural analogue of isoniazid (INH), both are pro-drugs that need to be activated by mycobacterial enzymes to exert their antimicrobial activity. Ethionamide mechanism of action is thought to be identical to INH although the pathway of activation is distinct from that of INH. Ethionamide is activated by an EthA enzyme, leading to the formation of a Soxide metabolite that has considerably better activity than the parent drug. ^[1] Ethionamide inhibits both biofilm formation and viability of mature biofilms. Ethionamide reduces the content of ergosterol in Cryptococcus spp. planktonic cells and destabilized or permeabilized the fungal cell membrane, leading to leakage of macromolecules. ^[2] Ethionamide is in general toxic at concentrations above 0.50 mM to HepG2, Caco-2, and RAW macrophage cells, but the toxicity is drastically reduced when Ethionamide is loaded into the microparticles. Ethionamide shows a fast metabolization process in the presence of the thermally carbonized- Porous silicon (TCPSi) particles. ^[3] Ethionamide is activated in Mycobacterium tuberculosis by the protein encoded by the gene Rv3854c. Ethionamide appear to disrupt cell wall biosynthesis and have at least one common cellular target, the enoyl-acyl carrier protein reductase InhA. ^[4]

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-01-11)
NCT05258877	Completed	Tuberculosis Pulmonary	BioVersys AG\|TASK Applied Science	June 10 2022	--

References

[4] Vannelli TA, et al. J Biol Chem,?002, 277(15), 12824-12829.

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Chemical lnformation & Solubility

Molecular Weight	166.24	Formula	C₈H₁₀N₂S
CAS No.	536-33-4	SDF	Download Ethionamide SDF
Smiles	CCC1=NC=CC(=C1)C(=S)N
Storage (From the date of receipt)	3 years-20°Cpowder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
Storage (From the date of receipt)	3 years-20°Cpowder		1 month-20°Cin solvent

In vitro
Batch:

DMSO : 33 mg/mL ( (198.5 mM)； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 17 mg/mL

Water : Insoluble

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In vivo
Batch:

Add solvents to the product individually and in order.

In vivo Formulation Calculator

Preparing Stock Solutions

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In vivo Formulation Calculator (Clear solution)

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

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

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

%DMSO+ %

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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.

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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