1. Cell Cycle/DNA Damage Stem Cell/Wnt PI3K/Akt/mTOR
  2. CDK GSK-3
  3. Kenpaullone

Kenpaullone  (Synonyms: 9-Bromopaullone; NSC-664704)

Cat. No.: HY-12302 Purity: 98.16%
COA Handling Instructions

Kenpaullone is a potent inhibitor of CDK1/cyclin B and GSK-3β, with IC50s of 0.4 μM and 23 nM, and also inhibits CDK2/cyclin A, CDK2/cyclin E, and CDK5/p25 with IC50s of 0.68 μM, 7.5 μM, 0.85 μM, respectively. Kenpaullone, a small molecule inhibitor of KLF4, reduces self-renewal of breast cancer stem cells and cell motility in vitro.

For research use only. We do not sell to patients.

Kenpaullone Chemical Structure

Kenpaullone Chemical Structure

CAS No. : 142273-20-9

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10 mM * 1 mL in DMSO
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10 mg USD 119 In-stock
50 mg USD 502 In-stock
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Customer Review

Based on 4 publication(s) in Google Scholar

Top Publications Citing Use of Products
  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

Kenpaullone is a potent inhibitor of CDK1/cyclin B and GSK-3β, with IC50s of 0.4 μM and 23 nM, and also inhibits CDK2/cyclin A, CDK2/cyclin E, and CDK5/p25 with IC50s of 0.68 μM, 7.5 μM, 0.85 μM, respectively. Kenpaullone, a small molecule inhibitor of KLF4, reduces self-renewal of breast cancer stem cells and cell motility in vitro.

IC50 & Target[1][2]

Cdk1/cyclin B

0.4 μM (IC50)

cdk2/cyclin A

0.68 μM (IC50)

CDK5/p35

0.85 μM (IC50)

CDK2/cyclinE

7.5 μM (IC50)

GSK-3β

0.023 μM (IC50)

erk1

20 μM (IC50)

erk2

9 μM (IC50)

c-raf

38 μM (IC50)

In Vitro

Kenpaullone shows much less effect on c-src (IC50, 15 μM), casein kinase 2 (IC50, 20 μM), erk 1 (IC50, 20 μM), and erk 2 (IC50, 9 μM). Kenpaullone acts by competitive inhibition of ATP binding, and the apparent Ki is 2.5 μM. Kenpaullone can inhibit the growth of tumor cells in culture (mean GI50, 43 μM) and causes altered cell cycle progression most clearly revealed under conditions of recovery from serum starvation[1]. Kenpaullone demonstrates a wide range of biological utility, extending from maintenance of pancreatic β cell survival and proliferation to the induction of apoptosis in cancer cells[2].

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

Molecular Weight

327.18

Formula

C16H11BrN2O

CAS No.
Appearance

Solid

Color

Off-white to yellow

SMILES

O=C1NC2=CC=CC=C2C(NC3=C4C=C(Br)C=C3)=C4C1

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 : ≥ 35 mg/mL (106.97 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.0564 mL 15.2821 mL 30.5642 mL
5 mM 0.6113 mL 3.0564 mL 6.1128 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 (7.64 mM); Suspended solution

    This protocol yields a suspended solution of ≥ 2.5 mg/mL (saturation unknown). 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 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.
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: 98.16%

References
Kinase Assay
[1]

The kinase assay is run for 10 min at 30°C with 1 mg/mL histone H1, in the presence of 15 μM [g-32P]ATP (3000 Ci/μmol; 1 mCi/mL) in a final volume of 30 ml. Purification and assays or inhibition of other kinases are performed. In kinetic experiments, the histone H1 concentration is lowered to 3.5 mg/mL; the ATP concentration ranged from 50 to 400 μM, and the kenpaullone concentration ranges from 1 to 4 μM.

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 3.0564 mL 15.2821 mL 30.5642 mL 76.4105 mL
5 mM 0.6113 mL 3.0564 mL 6.1128 mL 15.2821 mL
10 mM 0.3056 mL 1.5282 mL 3.0564 mL 7.6411 mL
15 mM 0.2038 mL 1.0188 mL 2.0376 mL 5.0940 mL
20 mM 0.1528 mL 0.7641 mL 1.5282 mL 3.8205 mL
25 mM 0.1223 mL 0.6113 mL 1.2226 mL 3.0564 mL
30 mM 0.1019 mL 0.5094 mL 1.0188 mL 2.5470 mL
40 mM 0.0764 mL 0.3821 mL 0.7641 mL 1.9103 mL
50 mM 0.0611 mL 0.3056 mL 0.6113 mL 1.5282 mL
60 mM 0.0509 mL 0.2547 mL 0.5094 mL 1.2735 mL
80 mM 0.0382 mL 0.1910 mL 0.3821 mL 0.9551 mL
100 mM 0.0306 mL 0.1528 mL 0.3056 mL 0.7641 mL
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Kenpaullone 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.

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