SRX246 has no interaction at V1b and V2 receptors. SRX246 shows negligible binding at 64 other receptors classes, including 35 G-proteincoupled receptors. SRX246 is a potent and CNS-penetrant vasopressin 1a (V1a) receptor antagonist (Ki=0.3 nM for human V
Potent positive allosteric modulator of α4β2 nAChRs (EC50 values are 20 and 18 nM for rat and human, respectively). Selective for hα4β2 over hα3β2, hα3β4 and hα7. Inhibits (α4)2(β2)3, muscle-type and Torpedo nAChRs (IC50 values are 0.5, 0.7 and 0.2 μM, respectively), but not (α4)3(β2)2 receptors. Exhibits ability to photoincorporate into aliphatic and nucleophilic amino acid side chains. Hamouda (2016) Photolabeling a nicotinic acetylcholine receptor (nAChR) with an (α4)3(β2)2 nAChR-selective positive allosteric modulator. Mol.Pharmacol. 89 575 PMID:26976945 |Albrecht et al (2008) Discovery and optimization of substituted piperidines as potent, selective, CNS-penetrant α4β2 nicotinic acetylcholine receptor potentiators. Bioorg.Med.Chem.Lett. 18 5209 PMID:18789861 |Wang et al (2017) Unraveling amino acid residues critical for allosteric potentiation of (α4)3(β2)2-type nicotinic acetylcholine receptor responses. J.Biol.Chem. 292 9988 PMID:28446611
Potent and selective TRPV1 antagonist. Blocks Ca2+ uptake by CHO cells expressing TRPV1 receptors and acid-induced Ca2+ uptake, respectively). Exhibits >4000-fold selectivity for TRPV1 over other TRP channels. Blocks capsaicin-induced flinch response and causes hyperthermia in rats. Orally available and non-CNSpenetrant. Tamayo et al (2008) Design and synthesis of peripherally restricted transient receptor potential vanilloid 1 (TRPV1) antagonists. J.Med.Chem. 51 2744 PMID:18386885 |Gavva et al (2007) The vanilloid receptor TRPV1 is tonically activated in vivo and involved in body temperature regulation. J.Neurosci. 27 3366 PMID:17392452