SB-408124

• CAT Number: I002988
• CAS Number: 288150-92-5
• Molecular Formula: C19H18F2N4O
• Molecular Weight: 356.377
• Purity: ≥95%
• Target: OX Receptor
• Solubility: DMSO 36 mg/mL; Water <1 mg/mL
• Storage: 3 years -20C powder
• IC50: 57 nM(Ki)
• IUPAC Name: 1-(6,8-difluoro-2-methylquinolin-4-yl)-3-[4-(dimethylamino)phenyl]urea
• InChI: InChI=1S/C19H18F2N4O/c1-11-8-17(15-9-12(20)10-16(21)18(15)22-11)24-19(26)23-13-4-6-14(7-5-13)25(2)3/h4-10H,1-3H3,(H2,22,23,24,26)
• InChIKey: JTARFZSNUAGHRB-UHFFFAOYSA-N
• SMILES: CC1=NC2=C(C=C(C=C2C(=C1)NC(=O)NC3=CC=C(C=C3)N(C)C)F)F

SB408124 is a non-peptide antagonist for OX1 receptor with Ki of 57 nM and 27 nM in both whole cell and membrane, respectively; exhibits 50-fold selectivity over OX2 receptor.IC50 Value: 57 nM(Ki)Target: OX1 Receptorin vitro: SB-408124 binds hypocretin type 1 receptor (HcrtR1) with pKi values of 7.57. Calcium mobilization studies shows that SB-408124 is a functional antagonist of the OX1 receptor with a affinity of approximately 50-fold selectivity over the OX2 receptor. A recent study indicates that pretreatment of primary cultures of rat astrocytes with SB-401824 before Orexin A administration significantly reduced the stimulatory action of Orexin A on both basal and forskolin-acivated cAMP production.in vivo: SB-408124 (30 μg/10 μL, administered intracerebroventricularly) decreases Orexin-A induced water intake in Wistar rats. Intracerebroventricularly administered Orexin-A (30 μg/10 μL) blocks the vasopressin (VP) level increase induced by either histamine or 2.5% NaCl administration, and this blocking effect is moderated by pretreatment with SB-408124. Intracerebroventricular pretreatment with SB-408124 (50 mM, 5 μL/h) prevents Bicuculline (BIC)-induced increases in endogenous glucose production (EGP).

Reference

[1]. Langmead et al (2004) Characterisation of the binding of [3H]-SB-674042, a novel nonpeptide antagonist, to the human orexin-1 receptor. Br.J.Pharmacol. 141 340.

[2]. Morairty SR, et al. Dual hypocretin receptor antagonism is more effective for sleep promotion than antagonism of either receptor alone.PLoS One. 2012;7(7):e39131. Epub 2012 Jul 2.

[3]. Melis MR, et al. Neuroendocrine regulatory peptide-1 and neuroendocrine regulatory peptide-2 influence differentially feeding and penile erection in male rats: sites of action in the brain.Regul Pept. 2012 Aug 20;177(1-3):46-52. Epub 2012 May 2.

[4]. Assisi L, et al. Expression and role of receptor 1 for orexins in seminiferous tubules of rat testis.Cell Tissue Res. 2012 Jun;348(3):601-7. Epub 2012 Mar 28.

[5]. Kis GK, et al. The osmotically and histamine-induced enhancement of the plasma vasopressin level is diminished by intracerebroventricularly administered orexin in rats.Pflugers Arch. 2012 Apr;463(4):531-6. Epub 2012 Feb 16.