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Danirixin (GSK1325756) CXCR antagonist

Name: Danirixin (GSK1325756)
Brand: Selleck Chemicals
SKU: S6620
Availability: InStock
Rating: 5 (2 reviews)

Cat.No.S6620

GSK1325756 (Danirixin) is a small molecule, non-peptide, high affinity (IC50 for CXCL8 (IL-8) binding = 12.5 nM), selective, and reversible CXCR2 antagonist.

Chemical Structure

Molecular Weight: 441.90

Jump to Mechanism of Action Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.82%

99.82

Related Targets	Immunology & Inflammation related CD markers Interleukins Anti-infection Antioxidant COX Histamine Receptor TNF-alpha ROS Parasite PD-1/PD-L1 TLR Prostaglandin Receptor IFN Nrf2 NOS CCR NLRP3 eIF STING AhR IL Receptor Complement System IRAK β-lactamase IDO/TDO PGES NADPH-oxidase FKBP LTR
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Chemical Information, Storage & Stability

Molecular Weight	441.90	Formula	C₁₉H₂₁ClFN₃O₄S	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	954126-98-8	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CC1=C(C=CC=C1F)NC(=O)NC2=C(C(=C(C=C2)Cl)S(=O)(=O)C3CCCNC3)O

Solubility

In vitro
Batch:

DMSO : 88 mg/mL ( (199.14 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

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.	4.400mg/ml (9.96mM)	Taking the 1 mL working solution as an example, add 50 μL of 88 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.	0.730mg/ml (1.65mM)	Taking the 1 mL working solution as an example, add 50 μL of 14.6 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.

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.

Mechanism of Action

Targets/IC₅₀/Ki	CXCR2 ^[2] CXCL8 ^[2] 12.5 nM
In vitro	Danirixin (GSK1325756) has high affinity for CXCR2, with a negative log of the 50% inhibitory concentration (pIC50) of 7.9 for binding to Chinese hamster ovary cell (CHO)-expressed human CXCR2, and 78-fold selectivity over binding to CHO-expressed CXCR1. It is a competitive antagonist against CXCL8 in Ca2+-mobilization assays, with a K_B of 6.5 nM and antagonist potency (pA2) of 8.44 and is fully reversible in washout experiments over 180 minutes^[1].
In vivo	In rat and human whole-blood studies assessing neutrophil activation by surface CD11b expression following CXCL2 (rat) or CXCL1 (human) challenge, Danirixin (GSK1325756) blocks the CD11b upregulation with pIC50s of 6.05 and 6.3, respectively. Orally dosed, it also blocks the influx of neutrophils into the lung in vivo in rats following aerosol lipopolysaccharide or ozone challenge, with median effective doses (ED50s) of 1.4 and 16 mg/kg respectively^[1].
References	https://pubmed.ncbi.nlm.nih.gov/28611093/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4475328/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT03457727	Completed	Pulmonary Disease Chronic Obstructive	GlaxoSmithKline	March 7 2018	Phase 1
NCT03136380	Completed	Pulmonary Disease Chronic Obstructive	GlaxoSmithKline	May 10 2017	Phase 1

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