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Isoniazid

Name: Isoniazid
Brand: Selleck Chemicals
SKU: S1937
Rating: 5 (5 reviews)

Catalog No.S1937 Purity: 99.9%

Isoniazid is a prodrug that blocks the action of fatty acid synthase by interacting with KatG , used for the prevention and treatment of tuberculosis.

Isoniazid Chemical Structure

CAS: 54-85-3

Selleck's Isoniazid has been cited by 5 publications

Purity & Quality Control

Batch: Purity: 99.9%

99.9

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Biological Activity

Description	Isoniazid is a prodrug that blocks the action of fatty acid synthase by interacting with KatG , used for the prevention and treatment of tuberculosis.

In vitro
In vitro	Isoniazid is a prodrug that requires activation by the mycobacterial catalase-peroxidase enzyme (KatG) to an active form that then exerts a lethal effect on an intracellular target or targets. ^[1] Isoniazid upregulates the expression of an operon containing five FAS II components, including kasA and acpM. Isoniazid results in the accumulation of ACP-bound lipid precursors to mycolic acids that are 26 carbons long and fully saturated. ^[2] Isoniazid enters the mycobacterial cell by passive diffusion. Isoniazid itself is not toxic to the bacterial cell, but acts as a prodrug and is activated by the mycobacterial enzyme KatG, a multifunctional catalase-peroxidase that has other activities, including peroxynitritase and NADH oxidase. Isoniazid inhibits cell wall lipid synthesis, coupled with the findings that inhibitory INH adducts of NAD+/NADP+ are formed from the isonicotinoyl radical, leading the field away from this area. ^[3] Isoniazid induces a concentration-dependent (0-40 mM) cytotoxic effect in day-1 treated HepG2 cells and not significantly affected by decreases in intracellular GSH concentrations. ^[4]

In Vivo
In vivo	Isoniazid increases CYP2E1 protein, and the 6-hydroxychlorzoxazone formation rate is increased by 2.7 and 2.2-fold in liver and kidney, respectively. Isoniazid decreases liver and kidney 20-HETE content to 34% and 15.6% of control, respectively, without significantly altering tissue 19-HETE concentration. ^[5]

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-01-11)
NCT05655702	Recruiting	Tuberculosis	ANRS Emerging Infectious Diseases\|Haiphong University of Medicine and Pharmacy\|Expertise France\|Université Montpellier\|New York University\|CENTER FOR SUPPORTING COMMUNITY DEVELOPMENT INITIATIVES	October 2 2023	Not Applicable
NCT06054334	Recruiting	Tuberculosis	Centre Hospitalier Universitaire Amiens	January 4 2023	--

References

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Chemical Information & Solubility

Molecular Weight	137.14	Formula	C₆H₇N₃O
CAS No.	54-85-3	SDF	Download Isoniazid SDF
Smiles	C1=CN=CC=C1C(=O)NN
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 : 27 mg/mL ( (196.87 mM)； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : 27 mg/mL

Ethanol : 27 mg/mL

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In vivo
Batch:

Add solvents to the product individually and in order.

In vivo Formulation Calculator

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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)

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% DMSO + % + % Tween 80 + % ddH₂O

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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.
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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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