Name: Febuxostat (TEI-6720)
Brand: Selleck Chemicals
SKU: S1547
Availability: InStock
Rating: 5 (7 reviews)

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Quality Control

Batch: Purity: 99.98%

99.98

Related Targets	Dehydrogenase HSP Transferase P450 (e.g. CYP17) PDE phosphatase PPAR Vitamin Carbohydrate Metabolism Mitochondrial Metabolism
Other Xanthine Oxidase Inhibitors	1,4-Dicaffeoylquinic acid Phytic acid Gnetum parvifolium Extract

Solubility

In vitro
Batch:

DMSO : 63 mg/mL (199.13 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 63 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.	1.550mg/ml (4.90mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 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.	1.550mg/ml (4.90mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 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	316.37	Formula	C₁₆H₁₆N₂O₃S	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	144060-53-7	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	TMX 67, TEI-6720			SMILES	CC1=C(SC(=N1)C2=CC(=C(C=C2)OCC(C)C)C#N)C(=O)O

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	xanthine oxidase 0.6 nM(Ki)
In vitro	Febuxostat displays potent mixed-type inhibition of the activity of purified bovine milk xanthine oxidase, with Ki and Ki' values of 0.6 nM and 3.1 nM respectively, indicating inhibition of both the oxidized and reduced forms of xanthine oxidase.
In vivo	Febuxostat (5–6 mg/kg/day) combined with fructose significantly lowers blood pressure, UA, triglycerides, and insulin in rats compared with fructose alone. This compound (5–6 mg/kg/day) combined with fructose also reduces glomerular pressure, renal vasoconstriction, and afferent arteriolar area in rats compared with fructose alone. It prevents hyperuricemia in 5/6 nephrectomy (5/6 Nx)+oxonic acid (OA)+Febuxostat(Fx) rats and ameliorates proteinuria, preserves renal function and prevents glomerular hypertension in both 5/6 nephrectomy (5/6 Nx)+vehicle (V)+Febuxostat(Fx) and 5/6 nephrectomy (5/6 Nx)+oxonic acid (OA)+Febuxostat(Fx) groups. This chemical (5 mg/kg/d by gavage for 8 days) treatment after transverse aortic constriction (TAC) attenuates the TAC-induced left ventricular (LV) hypertrophy and dysfunction. It blunts the TAC-induced increases in nitrotyrosine (indicating reduced myocardial oxidative stress), p-Erk(Thr202/Tyr204), and p-mTOR(Ser2488), with no effect on total Erk or total mTOR. This agent significantly suppresses oxonic acid activity, and thereby reduces oxidative stress in Sprague-Dawley rats with right nephrectomy and left renal I/R injury, as assessed by nitrotyrosine, thiobarbituric acid-reactive substances (TBARS) and urine 8-isoprostane. It also reduces the induction of endoplasmic reticulum (ER) stress in Sprague-Dawley rats with right nephrectomy and left renal I/R injury, as assessed by GRP-78, ATF4, and CHOP.
References	[1] https://pubmed.ncbi.nlm.nih.gov/15698861/ [2] https://pubmed.ncbi.nlm.nih.gov/18216151/ [3] https://pubmed.ncbi.nlm.nih.gov/18434753/ [4] https://pubmed.ncbi.nlm.nih.gov/18995179/ [5] https://pubmed.ncbi.nlm.nih.gov/22995295/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-01-08)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07326839	NOT_YET_RECRUITING	Gout; Obesity	XueMei Guo	2025-12-10
NCT07323095	NOT_YET_RECRUITING	Chronic Kidney Disease	Atom Therapeutics Co., Ltd	2026-06-30	PHASE2
NCT06834230	RECRUITING	Hyperuricemia or Gout; Hypertension	Saga University	2025-03-28	PHASE4
NCT07362355	RECRUITING	Primary Gout and Hyperuricemia	Jiangsu HengRui Medicine Co., Ltd.	2026-02-09	PHASE2
NCT07369622	NOT_YET_RECRUITING	Gout Initiating Urate-loweringUrate-lowering Therapy; Gout Arthritis; Gout and Hyperuricemia	Haiphong University of Medicine and Pharmacy	2026-01-20	PHASE4
NCT07485452	RECRUITING	Non-Small Cell Lung Cancer	Maastricht University Medical Center	2026-06	PHASE2

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Febuxostat (TEI-6720) Xanthine Oxidase Inhibitor

Chemical Structure

Molecular Weight: 316.37