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Isuzinaxib (APX-115 free base) NADPH-oxidase inhibitor

Name: Isuzinaxib (APX-115 free base)
Brand: Selleck Chemicals
SKU: S0777
Availability: InStock
Rating: 5 (2 reviews)

Cat.No.S0777

Isuzinaxib (APX-115 free base, Ewha-18278 free base) is a potent, orally active inhibitor of pan NADPH oxidase (pan-Nox) with Ki of 1.08 μM, 0.57 μM, and 0.63 μM for Nox1, Nox2 and Nox4, respectively. This compound significantly suppresses the expression of inflammatory molecules including MCP-1/CCL2, IL-6, and TNFα in the diabetic kidney.

Chemical Structure

Molecular Weight: 279.34

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Quality Control

Batch: Purity: 99.05%

99.05

Related Targets	PD-1/PD-L1 CXCR STING AhR Immunology & Inflammation related CD markers Interleukins Anti-infection Antioxidant COX
Other NADPH-oxidase Inhibitors	Setanaxib (GKT137831) NAD+ (β-DPN) DPI (Diphenyleneiodonium chloride) Apocynin 2-Acetylphenothiazine (ML171) VAS2870 GLX351322 GSK2795039 gp91ds-tat

Solubility

In vitro
Batch:

DMSO : 56 mg/mL (200.47 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 56 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	2.800mg/ml (10.02mM)	Taking the 1 mL working solution as an example, add 50 μL of 56 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.400mg/ml (5.01mM)	Taking the 1 mL working solution as an example, add 50 μL of 28 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

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

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.

Chemical Information, Storage & Stability

Molecular Weight	279.34	Formula	C₁₇H₁₇N₃O	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	1270084-92-8	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	Ewha-18278 free base			SMILES	CCCC1=C(NN(C1=O)C2=CC=CC=N2)C3=CC=CC=C3

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	MCP-1/CCL2 IL-6 TNFα NOX2 (Cell-free assay) 0.57 μM(Ki) NOX4 (Cell-free assay) 0.63 μM(Ki) NOX1 (Cell-free assay) 1.08 μM(Ki)
References	[1] https://pubmed.ncbi.nlm.nih.gov/26975635/ [2] https://pubmed.ncbi.nlm.nih.gov/28165467/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2025-07-18)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06962098	RECRUITING	Diabetic Kidney Disease (DKD)	Aptabio Therapeutics, Inc.	2025-05-26	PHASE2
NCT05758896	COMPLETED	Contrast Induced Acute Kidney Injury	Aptabio Therapeutics, Inc.	2023-12-27	PHASE2
NCT04534439	Completed	Diabetic Nephropathies\|Diabetes Mellitus Type 2\|Nephropathy Diabetic	Aptabio Therapeutics Inc.	2020-08-24	Phase 2

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