Description: Highly potent and selective OX2 antagonist; brain penetrant
Chemical Name:N-Ethyl-2-[(6-methoxy-3-pyridinyl)[(2-methylphenyl)sulfonyl]amino]-N-(3-pyridinylmethyl)-acetamide
Purity: ≥98% (HPLC)
Biological Activity
Technical Data
Solubility
Calculators
Datasheets
References
Biological Activity
Highly potent, selective OX2 receptor antagonist (IC50 values are 2.3 nM and 1900 nM for OX2 and OX1 respectively). Displays negligible or no inhibition of a panel of 80 receptors. Blocks orexin-B- and orexin-A-invoked calcium mobilization in hOX2-expressing CHO cells (IC50 values are 7.9 nM and 8.8 nM respectively); reverses orexin-B-induced hyperlocomotion in mice. Brain penetrant.
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
Solubility Data
Solvent
Max Conc. mg/mL
Max Conc. mM
Solubility
DMSO
45.45
100
ethanol
22.73
50
Preparing Stock Solutions
The following data is based on the product molecular weight 454.54. 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.
Concentration / Solvent Volume / Mass
1 mg
5 mg
10 mg
1 mM
2.2 mL
11 mL
22 mL
5 mM
0.44 mL
2.2 mL
4.4 mL
10 mM
0.22 mL
1.1 mL
2.2 mL
50 mM
0.04 mL
0.22 mL
0.44 mL
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Product Datasheets
Certificate of Analysis / Product Datasheet
Safety Datasheet
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References
References are publications that support the products' biological activity.
Malherbeet al (2009) Biochemical and behavioural characterization of EMPA, a novel high-affinity, selective antagonist for the OX2 receptor. Br.J.Pharmacol. 156 1326 PMID: 19751316
Mochizukiet al (2011) Orexin receptor 2 expression in the posterior hypothalamus rescues sleepiness in narcoleptic mice. Proc.Natl.Acad.Sci.U.S.A 108 4471 PMID: 21368172
Malherbeet al (2010) Mapping the binding pocket of dual antagonist almorexant to human orexin 1 and orexin 2 receptors: comparison with the selective OX1 antagonist SB-674042 and the selective OX2 antagonist N-ethyl-2-[(6-methoxy-pyridin-3-yl)-(toluene- Mol.Pharmacol. 78 81 PMID: 20404073