1. Epigenetics Stem Cell/Wnt Protein Tyrosine Kinase/RTK JAK/STAT Signaling
  2. JAK
  3. JAK3-IN-1

JAK3-IN-1 is a potent, selective and orally active JAK3 inhibitor with an IC50 of 4.8 nM. JAK3-IN-1 shows over 180-fold more selective for JAK3 than JAK1 (IC50 of 896 nM) and JAK2 (IC50 of 1050 nM).

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JAK3-IN-1 Chemical Structure

JAK3-IN-1 Chemical Structure

CAS No. : 1805787-93-2

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10 mM * 1 mL in DMSO
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Based on 1 publication(s) in Google Scholar

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Description

JAK3-IN-1 is a potent, selective and orally active JAK3 inhibitor with an IC50 of 4.8 nM. JAK3-IN-1 shows over 180-fold more selective for JAK3 than JAK1 (IC50 of 896 nM) and JAK2 (IC50 of 1050 nM)[1].

IC50 & Target[1]

JAK3

4.8 nM (IC50)

JAK1

896 nM (IC50)

JAK2

1050 nM (IC50)

TTK

49 nM (IC50)

BTK

794 nM (IC50)

ITK

1070 nM (IC50)

In Vitro

JAK3-IN-1(Compound 9; 0-5 µM; 3 hours; BMDMs cells) treatment completely inhibits IL-4 induced p-STAT6 at a concentration of 500 nM and only partially inhibits IFNβ-induced p-STAT1 at a concentration of 5.0 μM[1].
. JAK3-IN-1(Compound 9) most potently inhibits JAK3 and identified fms-related tyrosine kinase 3 (FLT3) and several tyrosine protein kinase (TEC)-family kinases as being potential off-targets. Enzymatic assays using the Z’-lyte or LanthaScreen formats confirmed enzymatic inhibition of FLT3 (IC50 = 13 nM), TTK protein kinase (TTK, IC50 = 49 nM), BLK proto-oncogene (BLK, IC50 = 157 nM) and tyrosine protein kinase TXK (TXK, IC50 = 36 nM). JAK3-IN-1 shows very low inhibition scores for other JAKs and wild-type (WT) EGFR, which is consistent with the over 180-fold higher IC50s against EGFRWT and TYK2 (IC50s =409 nM, > 10000 respectively). JAK3-IN-1 possesses over 165-fold higher IC50s for BTK or ITK (IC50s = 794 and 1070 nM respectively)[1].
JAK3-IN-1(Compound 9) selectively inhibits the proliferation of JAK3-dependent Ba/F3 cells (IC50 = 69 nM) relative to other JAK-dependent Ba/F3 cells, for which there was no antiproliferative effect at concentrations below 3.0 μM[1].

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

Western Blot Analysis[1]

Cell Line: BMDMs cells
Concentration: 0 µM, 0.1 µM, 0.5 µM, 1 µM, 5 µM
Incubation Time: 3 hours
Result: Completely inhibited IL-4 induced p-STAT6 at a concentration of 500 nM and only partially inhibited IFNβ-induced p-STAT1 at a concentration of 5.0 μM.
In Vivo

JAK3-IN-1(Compound 9) shows reasonable pharmacokinetic properties, with moderate T1/2 of 1.4 h, area under the curve (AUC) value of 795 ng*hr/mL following a 10 mg/Kg oral dose and good oral bioavailability of 66%. After oral administration with JAK3-IN-1(Compound 9) (75 mpk, QD) for 8 days, the numbers of B or T lymphocytes in the tumor-bearing lungs and spleens of treated mice is not affected, however, the number of NK cells is reduced[1].

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

Molecular Weight

508.02

Formula

C26H30ClN7O2

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(C=C)NC1=CC(CNC2=NC(NC3=C(OC)C=C(N4CCN(C)CC4)C=C3)=NC=C2Cl)=CC=C1

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 (196.84 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 1.9684 mL 9.8421 mL 19.6843 mL
5 mM 0.3937 mL 1.9684 mL 3.9369 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
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Volume
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Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

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Volume (start)

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C2

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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 (4.92 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 (4.92 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:

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(per animal)

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Dosing volume
(per animal)

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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
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 1.9684 mL 9.8421 mL 19.6843 mL 49.2107 mL
5 mM 0.3937 mL 1.9684 mL 3.9369 mL 9.8421 mL
10 mM 0.1968 mL 0.9842 mL 1.9684 mL 4.9211 mL
15 mM 0.1312 mL 0.6561 mL 1.3123 mL 3.2807 mL
20 mM 0.0984 mL 0.4921 mL 0.9842 mL 2.4605 mL
25 mM 0.0787 mL 0.3937 mL 0.7874 mL 1.9684 mL
30 mM 0.0656 mL 0.3281 mL 0.6561 mL 1.6404 mL
40 mM 0.0492 mL 0.2461 mL 0.4921 mL 1.2303 mL
50 mM 0.0394 mL 0.1968 mL 0.3937 mL 0.9842 mL
60 mM 0.0328 mL 0.1640 mL 0.3281 mL 0.8202 mL
80 mM 0.0246 mL 0.1230 mL 0.2461 mL 0.6151 mL
100 mM 0.0197 mL 0.0984 mL 0.1968 mL 0.4921 mL
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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.

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JAK3-IN-1
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