CX-4945 (Silmitasertib)

Catalog No.: A11060

CK2 inhibitor

CX-4945 (Silmitasertib)

CX-4945 (Silmitasertib) Chemical Structure

CAS NO. 1009820-21-6

CX-4945 is a potent and selective orally bioavailable small molecule inhibitor of CK2 that inhibits human umbilical vein endothelial cell migration, tube formation, and blocks CK2-dependent hypoxia-induced factor 1 alpha (HIF-1α) transcription in cancer cells.

Availability: In stock

Package Price Qty
2 mg
$40.00
5 mg
$80.00
10 mg
$130.00
50 mg
$350.00
10mM * 1mL in DMSO
$85.00
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Warning Products are for laboratory research use only. Not for human use. We do not sell to patients.
  • M Afzal, .et al. Protein kinase CK2 impact on intracellular calcium homeostasis in prostate cancer, Molecular and Cellular Biochemistry, 2020, 470, pages131-143
  • Fukumoto Y, .et al. Human Rad17?C-terminal tail is phosphorylated by concerted action of CK1δ/ε and CK2 to promote interaction with the 9-1-1 complex, Biochem Biophys Res Commun, 2019, Sep 17;517(2):310-316 PMID: 31353086
  • Zaman MS, .et al. Protein kinase CK2 is involved in zinc homeostasis in breast and prostate cancer cells, Biometals, 2019, Oct 3 PMID: 31583500
  • Fukumoto Y, .et al. Casein kinase 2 promotes interaction between Rad17 and the 9-1-1 complex through constitutive phosphorylation of the C-terminal tail of human Rad17, Biochem Biophys Res Commun, 2018, Oct 2;504(2):380-386 PMID: 29902452
  • ST Ribeiro, .et al. Casein kinase 2 controls the survival of normal thymic and leukemic γδ T cells via promotion of AKT signaling, Leukemia, 2017, Jul; 31(7): 1603-1610 PMID: 27899804
  • Valentina Gandin, .et al. mTORC1 and CK2 coordinate ternary and eIF4F complex assembly, Nat Commun, 2016, 7: 11127 PMID: 27040916
  • Ampofo E, .et al. Protein Kinase CK2 Regulates Leukocyte-Endothelial Cell Interactions during Ischemia and Reperfusion in Striated Skin Muscle, Eur Surg Res, 2016, 57(1-2):111-24 PMID: 27287005
  • Emmanuel Ampofo, .et al. Role of protein kinase CK2 in the dynamic interaction of platelets, leukocytes and endothelial cells during thrombus formation., Thromb Res., 2015, Nov;136(5):996-1006 PMID: 26381437
  • Emmanuel Ampofo, .et al. Inhibition of protein kinase CK2 suppresses tumor necrosis factor (TNF)-α-induced leukocyte-endothelial cell interaction., Biochim Biophys Acta., 2015, Oct;1852(10 Pt A):2123-36 PMID: 26189586
  • A. Margarida Gomes, .et al. Adult B-cell acute lymphoblastic leukemia cells display decreased PTEN activity and constitutive hyperactivation of PI3K/Akt pathway despite high PTEN protein levels, Haematologica, 2014, 99(6): 1062-1068 PMID: 24561792

Biological Activity

CX-4945 is a potent and selective orally bioavailable small molecule inhibitor of CK2 that inhibits human umbilical vein endothelial cell migration, tube formation, and blocks CK2-dependent hypoxia-induced factor 1 alpha (HIF-1α) transcription in cancer cells.
Targets
CK2 (Cell-free assay)
1 nM
In vitro DMSO 16 mg/mL (45.74 mM)
Water <1 mg/mL (<1 mM)
Ethanol <1 mg/mL (<1 mM)
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Adooq tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
0.1 mM 28.59 mL 142.94 mL 285.88 mL
0.5 mM 5.72 mL 28.59 mL 57.18 mL
1 mM 2.86 mL 14.29 mL 28.59 mL
5 mM 0.57 mL 2.86 mL 5.72 mL

*The above data is based on the productmolecular weight 349.8 . Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Catalog Num A11060
Actions Inhibitor
M. Wt 349.8
Formula C19H12ClN3O2
Solubility DMSO
Purity >98%
Storage at -20°C 3 years Powder
CAS No. 1009820-21-6
Synonyms Silmitasertib, CX 4945, CX4945
SMILES C1=CC(=CC(=C1)Cl)NC2=C3C=CN=CC3=C4C=CC(=CC4=N2)C(=O)O

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