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EI1 (KB-145943; EI-1) is a potent and selective inhibitor of EZH2 (Enhancer of zeste homolog 2) with potential antitumor activity. It inhibits EZH2 (WT) and EZH2 (Y641F) with an IC50 of 15 nM and 13 nM, respectively.
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Physicochemical Properties
| Molecular Formula |
C23H26N4O2
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| Molecular Weight |
390.48
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| Exact Mass |
390.205
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| CAS # |
1418308-27-6
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| Related CAS # |
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| PubChem CID |
72199293
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| Appearance |
White to off-white solid powder
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| Density |
1.2±0.1 g/cm3
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| Boiling Point |
675.9±55.0 °C at 760 mmHg
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| Flash Point |
362.6±31.5 °C
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| Vapour Pressure |
0.0±2.1 mmHg at 25°C
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| Index of Refraction |
1.617
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| LogP |
2.92
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| Hydrogen Bond Donor Count |
2
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| Hydrogen Bond Acceptor Count |
3
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| Rotatable Bond Count |
6
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| Heavy Atom Count |
29
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| Complexity |
771
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| Defined Atom Stereocenter Count |
0
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| InChi Key |
PFHDWRIVDDIFRP-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C23H26N4O2/c1-5-17(6-2)27-8-7-18-19(10-16(12-24)11-21(18)27)22(28)25-13-20-14(3)9-15(4)26-23(20)29/h7-11,17H,5-6,13H2,1-4H3,(H,25,28)(H,26,29)
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| Chemical Name |
6-cyano-N-[(4,6-dimethyl-2-oxo-1H-pyridin-3-yl)methyl]-1-pentan-3-ylindole-4-carboxamide
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| Synonyms |
| KB145943;EI1; E I1; KB 145943;E-I1; KB-145943; |
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder-20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
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| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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Biological Activity
| ln Vitro |
EI1 (KB-145943) is known to suppress cellular H3K27 methylation and promote the expression of the Ezh2 target gene p16 in DLBCL cells. Moreover, EI1 (KB-145943) suppresses H3K27me3 and cell division in mouse embryonic fibroblasts. Furthermore, EI1 (KB-145943) induces cell cycle arrest and apoptosis in DLBCL cells that possess the Ezh2 mutation, while also specifically inhibiting their growth[1].
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| ln Vivo |
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| Animal Protocol |
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| References |
[1]. Selective inhibition of Ezh2 by a small molecule inhibitor blocks tumor cells proliferation. Proc Natl Acad Sci U S A. 2012 Dec 26;109(52):21360-5.
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Solubility Data
| Solubility (In Vitro) |
| DMSO: 42 mg/mL (107.5 mM) | | Water:<1 mg/mL | | Ethanol:<1 mg/mL |
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| Solubility (In Vivo) |
| CCC(CC)N(C=C1)C2=C1C(C(NCC3=C(C)C=C(C)NC3=O)=O)=CC(C#N)=C2 |
(Please use freshly prepared in vivo formulations for optimal results.)
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| Preparing Stock Solutions |
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1 mg |
5 mg |
10 mg |
| 1 mM |
2.5610 mL |
12.8048 mL |
25.6095 mL |
| 5 mM |
0.5122 mL |
2.5610 mL |
5.1219 mL |
| 10 mM |
0.2561 mL |
1.2805 mL |
2.5610 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles. |
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