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EAI045 EGFR inhibitor

Name: EAI045
Brand: Selleck Chemicals
SKU: S8242
Availability: InStock
Rating: 5 (2 reviews)

Cat.No.S8242

EAI045 is an allosteric inhibitor that targets selected drug-resistant EGFR mutants but spares the wild-type receptor.

Chemical Structure

Molecular Weight: 383.40

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

Quality Control

Batch: Purity: 99.37%

99.37

Related Targets	VEGFR PDGFR FGFR c-Met Src FLT3 HER2 c-Kit Bcr-Abl MEK BTK IGF-1R ALK Trk receptor Syk Axl CSF-1R c-RET FAK Mertk Tie-2 DYRK Tyro3 Ephrin receptor ROS1 Pyk2 RON DDR ACK Fer kinase
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Chemical Information, Storage & Stability

Molecular Weight	383.40	Formula	C₁₉H₁₄FN₃O₃S	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1942114-09-1	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	C1C2=CC=CC=C2C(=O)N1C(C3=C(C=CC(=C3)F)O)C(=O)NC4=NC=CS4

Solubility

In vitro
Batch:

DMSO : 76 mg/mL (198.22 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous 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.	3.800mg/ml (9.91mM)	Taking the 1 mL working solution as an example, add 50 μL of 76 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.	0.470mg/ml (1.23mM)	Taking the 1 mL working solution as an example, add 50 μL of 9.4 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.

Mechanism of Action

Targets/IC₅₀/Ki	EGFR mutants ^[1]
In vitro	EAI045 potently inhibits EGFR Y1173 phosphorylation in H1975 cells (half maximal effective concentration (EC50)=2nM), but not in HaCaT cells, a keratinocyte cell line with wild-type EGFR. Despite potent inhibition of mutant EGFR, this compound shows no anti-proliferative effect in the H1975 and H3255 cell lines with concentrations as high as 10μM^[1]. It inhibits L858R/T790M mutant with an IC50 of 3 nM. However, this compound is not able to completely abolish EGFR autophosphorylation in H1975 NSCLC cell line harboring the L858R/T790M mutant. Dimerization-defective/independent mutants are markedly more sensitive to it. Since EGFR dimerization is required for kinase enzyme activation, this chemical may be active against one subunit of an EGFR heterodimer/asymmetric dimer^[2].
In vivo	Mouse pharmacokinetic studies with EAI045 reveals a maximal plasma concentration of 0.57μM, a half-life of 2.15 h, and oral bioavailability of 26% after dosing at 20mg/kg^[1]. When combined with cetuximab that blocks EGFR dimerization, this compound markedly reduces tumor growth in a mouse model of L858R/T790M-mutant-driven lung cancer. The mice treated alone with this chemical do not respond. It in combination with cetuximab also induces marked tumor shrinkage in the mouse model carrying L858R/T790M/C797S, a mutant known to be resistant to all third-generation EGFR TKIs. This compound and cetuximab exhibits mechanistic synergy^[2].
References	[1] https://pubmed.ncbi.nlm.nih.gov/27251290/ [2] https://pubmed.ncbi.nlm.nih.gov/27448564/

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Handling Instructions

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Frequently Asked Questions

Question 1:
Is this compound a stereochemically pure compound or a racemic compound?

Answer:
Our S8242 is a racemic compound.

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