2. JAK/STAT Signaling Protein Tyrosine Kinase/RTK
  3. EGFR
  4. EAI045

EAI045 is an allosteric and the fourth-generation inhibitor of mutant EGFR with IC50s of 1.9, 0.019, 0.19 and 0.002 μM for EGFR, EGFRL858R, EGFRT790M and EGFRL858R/T790M at 10 μM ATP, respectively.

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EAI045 Chemical Structure

EAI045 Chemical Structure

CAS No. : 1942114-09-1

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10 mM * 1 mL in DMSO
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Customer Review

Based on 1 publication(s) in Google Scholar

EAI045 Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE EAI045

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  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

EAI045 is an allosteric and the fourth-generation inhibitor of mutant EGFR with IC50s of 1.9, 0.019, 0.19 and 0.002 μM for EGFR, EGFRL858R, EGFRT790M and EGFRL858R/T790M at 10 μM ATP, respectively.

IC50 & Target[1]

EGFR

1.9 μM (IC50)

EGFRL858R

0.019 μM (IC50)

EGFRT790M

0.19 μM (IC50)

EGFRL858R/T790M

0.002 μM (IC50)

In Vitro

EAI045 potently inhibits EGFR Y1173 phosphorylation in H1975 cells (EC50=2 nM), but not in HaCaT cells. EAI045 is an inhibitor of the L858R/T790M mutant with 1000-fold selectivity versus wild type EGFR at 1 mM ATP. Profiling of EAI045 against a panel of 250 protein kinases reveals exquisite selectivity; no other kinases are inhibited by more than 20% at 1 μM EAI045[1]. EAI045 has high potency and selectivity for L858R/T790M mutation. In L858R/T790M-mutant NSCLC cell line H1975 cells, EAI045 decreases but does not completely abolish the EGFR autophosphorylation. In stably transfected NIH-3T3 cells harboring the L858R/T790M EGFR mutant, EAI045 shows the same activity. In L858R-mutant H3255 cells, EAI045 exhibits moderate activity. In the HaCaT cells, a keratinocyte cell line with wild-type EGFR, EAI045 does not show any activity of inhibiting EGFR phosphorylation. It confirms the selectivity of EAI045 for mutant EGFR[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

EAI045 Related Antibodies
In Vivo

In a genetically engineered mouse model of L858R/T790Mmutant-driven lung cancer , remarkable tumor regression is observed in L858R/T790M-mutant mice treated with the combination of EAI045 and cetuximab. No response is seen in those mice treated with EAI045 alone. The same effect is seen in both L858R/T790M/C797S- engineered Ba/F3 cells and in mice carrying the L858R/T790M/C797S tumor xenografts. These assays clearly show that EAI045 can overcome resistance from acquired T790M and C797S mutations[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Molecular Weight

383.40

Formula

C19H14FN3O3S
CAS No.
Appearance

Solid

Color

White to khaki

SMILES

O=C(C(C1=C(O)C=CC(F)=C1)N2C(C(C=CC=C3)=C3C2)=O)NC4=NC=CS4
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (260.82 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6082 mL 13.0412 mL 26.0824 mL
5 mM 0.5216 mL 2.6082 mL 5.2165 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.52 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: 2.5 mg/mL (6.52 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.08%

COA (258 KB) LCMS (260 KB)

Handling Instructions (2659 KB)
References
Cell Assay
[1]

For the experiment studying the effect of EGF pre-treatment on EAI045 target modulation, H1975 cells are harvested and plated in 0.5% FBS/RPMI Pen/Strep. On the following day, cells are pre-treated with 0.5% FBS/RPMI media with or without 10 ng EGF/mL for 5 minutes. Compound is added and assay is carried out[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[1]

Mice: Cetuximab is administrated at 1 mg/mouse every other day by intraperitoneal injection. The TL, TD and TLCS mice are monitored by MRI to quantify lung tumor burden before being assigned to various study treatment cohorts, which are non-blinded and not formally randomized. All treated mice had an equal initial tumor burden. MRI evaluation is repeated every 2 weeks during treatment. The animals are imaged with a rapid acquisition with relaxation enhancement sequence in the coronal and axial planes with a 1-mm slice thickness gating with respiratory rates. The tumor burden volumes are quantified[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.6082 mL 13.0412 mL 26.0824 mL 65.2061 mL
5 mM 0.5216 mL 2.6082 mL 5.2165 mL 13.0412 mL
10 mM 0.2608 mL 1.3041 mL 2.6082 mL 6.5206 mL
15 mM 0.1739 mL 0.8694 mL 1.7388 mL 4.3471 mL
20 mM 0.1304 mL 0.6521 mL 1.3041 mL 3.2603 mL
25 mM 0.1043 mL 0.5216 mL 1.0433 mL 2.6082 mL
30 mM 0.0869 mL 0.4347 mL 0.8694 mL 2.1735 mL
40 mM 0.0652 mL 0.3260 mL 0.6521 mL 1.6302 mL
50 mM 0.0522 mL 0.2608 mL 0.5216 mL 1.3041 mL
60 mM 0.0435 mL 0.2174 mL 0.4347 mL 1.0868 mL
80 mM 0.0326 mL 0.1630 mL 0.3260 mL 0.8151 mL
100 mM 0.0261 mL 0.1304 mL 0.2608 mL 0.6521 mL
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EAI045 Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

EAI0451942114-09-1EAI 045EAI-045EGFREpidermal growth factor receptorErbB-1HER1Inhibitorinhibitorinhibit

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