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MS1943 Histone Methyltransferase inhibitor

Name: MS1943
Brand: Selleck Chemicals
SKU: S8918
Availability: InStock
Rating: 5 (1 reviews)

Cat.No.S8918

MS1943 is an orally bioavailable EZH2 selective degrader that effectively reduces EZH2 levels in cells with IC50 of 120 nM for inhibiting EZH2 methyltransferase activity.

Chemical Structure

Molecular Weight: 718.93

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Quality Control

Batch: Purity: 99.86%

99.86

Related Targets	HDAC JAK BET PKC PARP HIF PRMT EZH2 AMPK Histone Acetyltransferase
Other Histone Methyltransferase Inhibitors	Pinometostat (EPZ5676) 3-Deazaneplanocin A (DZNep) Hydrochloride BIX-01294 Trihydrochloride UNC1999 EPZ015666 (GSK3235025) EPZ004777 MM-102 (HMTase Inhibitor IX) Chaetocin SGC 0946 EPZ005687

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (139.09 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 100 mg/mL

Water : Insoluble

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.
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.	5.000mg/ml (6.95mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 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.	2.500mg/ml (3.48mM)	Taking the 1 mL working solution as an example, add 50 μL of 50 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.

Chemical Information, Storage & Stability

Molecular Weight	718.93	Formula	C₄₂H₅₄N₈O₃	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	2225938-17-8	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CC1=CC(=C(C(=O)N1)CNC(=O)C2=C3C=NN(C3=CC(=C2)C4=CN=C(C=C4)N5CCN(CC5)CCNC(=O)CC67CC8CC(C6)CC(C8)C7)C(C)C)C

Mechanism of Action

Targets/IC₅₀/Ki	EZH2 (Cell-free assay) 120 nM
In vitro	MS1943 is a first-in-class EZH2 selective degrader that effectively reduces EZH2 levels in cells. This compound has a profound cytotoxic effect in multiple TNBC cells, while sparing normal cells. It mediates its cytotoxic effects through ER stress and UPR induction in cells that are dependent for their growth on EZH2.
In vivo	This compound is efficacious in vivo and well tolerated in mice at the efficacious dose, suggesting that pharmacologic degradation of EZH2 can be advantageous for treating the cancers that are dependent on EZH2.
References	[1] https://pubmed.ncbi.nlm.nih.gov/31819273/

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