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EPZ-6438 (Tazemetostat) EZH2 inhibitor

Cat.No.S7128

Tazemetostat (EPZ-6438, E7438) is a potent, and selective EZH2 inhibitor with K_i and IC50 of 2.5 nM and 11 nM in cell-free assays, exhibiting a 35-fold selectivity versus EZH1 and >4,500-fold selectivity relative to 14 other HMTs.

EPZ-6438 (Tazemetostat) EZH2 inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 572.74

Quality Control

Batch: Purity: 99.90%

99.90

Related Targets	HDAC JAK BET Histone Methyltransferase PKC PARP HIF PRMT AMPK Sirtuin
Other EZH2 Inhibitors	PF-06821497 GSK126 Tulmimetostat (CPI-0209) GSK343 CPI-169 MS1943 SHR2554 EZH2/HSP90-IN-29 EBI-2511 Igermetostat

Solubility in DMSO or Water

In vitro
Batch:

DMSO : 100 mg/mL (174.59 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

The solubility data above are all experimental results (not literature values).

DMSO : 100 mg/mL (174.59 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

The solubility data above are all experimental results (not literature values).

DMSO : 100 mg/mL (174.59 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

The solubility data above are all experimental results (not literature values).

DMSO : 100 mg/mL (174.59 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

The solubility data above are all experimental results (not literature values).

DMSO : 100 mg/mL (174.59 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

The solubility data above are all experimental results (not literature values).

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection 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.
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.	0.630mg/ml (1.10mM)	Taking the 1 mL working solution as an example, add 50 μL of 12.5 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 make it clear. Volume up to 1 mL. 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.
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.
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.

Read more about EPZ-6438 (Tazemetostat) solubility in DMSO or water

Working Concentrations for Cell Culture Treatment

Read more about EPZ-6438 (Tazemetostat) working concentrations for cell culture treatment

Working Concentrations for Animal Model Treatment

Mechanism of Action

Information	EPZ-6438 (Tazemetostat) is a potent and highly selective EZH2 inhibitor. It works by binding to the EZH2 enzyme, blocking H3K27 methylation and PRC2-mediated epigenetic silencing. This reactivates tumor suppressors, showing high therapeutic value in lymphomas and sarcomas.
Read more about EPZ-6438 (Tazemetostat) IC50 for cell-based and cell-free assays
Primary Applications and Mechanism of Action

Read more about EPZ-6438 (Tazemetostat) Mechanism of Action

Chemical Information, Storage & Stability

Molecular Weight	572.74	Formula	C₃₄H₄₄N₄O₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1403254-99-8	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	E7438			Smiles	CCN(C1CCOCC1)C2=CC(=CC(=C2C)C(=O)NCC3=C(C=C(NC3=O)C)C)C4=CC=C(C=C4)CN5CCOCC5

Read more about storage & stability

EPZ-6438 (Tazemetostat) VS GSK126 | 3-Deazaneplanocin A (DZNep) Hydrochloride

Read more comparative analysis about EPZ-6438 (Tazemetostat)

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

Frequently Asked Questions

Question 1:
Could you please help test the formulation of it for in vivo studies?

Answer:
We've tried some vehicles for it, and found this compound can be dissolved in 2% DMSO+30% PEG 300+5% Tween+ddH2O at 5 mg/ml as a clear solution. Dissolved in 5% DMSO+0.5% CMC Na at 15 mg/ml, it is a suspension for oral gavage.

Dilution Calculator

Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:

Concentration _(start) x Volume _(start) = Concentration _(final) x Volume _(final)

This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).

The Serial Dilution Calculator Equation

Serial Dilutions

Concentration (start):

Dilution-folds:

Computed Result

C1=C0/X	C1:		LOG(C1):
C2=C1/X	C2:		LOG(C2):
C3=C2/X	C3:		LOG(C3):
C4=C3/X	C4:		LOG(C4):
C5=C4/X	C5:		LOG(C5):
C6=C5/X	C6:		LOG(C6):
C7=C6/X	C7:		LOG(C7):
C8=C7/X	C8:		LOG(C8):