GSK343 --- EZH2 Methyltransferase Inhibitor

Catalog No. size PriceQuantity
M60173-2S 2 mg solid $79
M60173-10S 10mg solid $312


GSK343 is a potent and selective small molecule inhibitor of histone methyltransferase EZH2 with an IC50 of 4 nM. It showed 60 fold selectivity against EZH1, and >1000 fold selectivity against other histone methyltransferases. GSK343 inhibits H3K27 methylation in HCC1806 breast cancer cells with an IC50 of <200 nM. GSK343 significantly suppressed the growth of EOC cells cultured in 3D matrigel extracellular matrix (ECM), which more closely mimics the tumor microenvironment in vivo. Notably, it induces apoptosis of EOC cells in 3D but not 2D culture. In addition, GSK343 significantly inhibited the invasion of EOC cells.

Product information

CAS Number: 1346704-33-3

Molecular Weight: 541.69

Formula: C31H39N7O2

Chemical Name: 1-isopropyl-N-((6-methyl-2-oxo-4-propyl-1,2-dihydropyridin-3-yl)methyl)-6-(2-(4-methylpiperazin-1-yl)pyridin-4-yl)-1H-indazole-4-carboxamide

Smiles: CN1CCN(CC1)C1=CC(=CC=N1)C1C=C2C(C=NN2C(C)C)=C(C=1)C(=O)NCC1=C(CCC)C=C(C)NC1=O


InChi: InChI=1S/C31H39N7O2/c1-6-7-23-14-21(4)35-31(40)26(23)18-33-30(39)25-15-24(16-28-27(25)19-34-38(28)20(2)3)22-8-9-32-29(17-22)37-12-10-36(5)11-13-37/h8-9,14-17,19-20H,6-7,10-13,18H2,1-5H3,(H,33,39)(H,35,40)

Technical Data

Appearance: Solid Power.

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO up to 1 mM

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

GSK343 was used at 10-50 µM final concentration in vitro and in cellular assays.


  1. Sharad K, et al. Identification of Potent, Selective, Cell-Active Inhibitors of the Histone Lysine Methyltransferase EZH2. (2012) ACS Med. Chem. Lett. 3 (12): 1091–1096
  2. Amatangelo MD, et al. Three-dimensional culture sensitizes epithelial ovarian cancer cells to EZH2 methyltransferase inhibition. (2013) Cell Cycle 12(13):2113-9.

Products are for research use only. Not for human use.


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