132449-89-9

132449-89-9 structure
132449-89-9 structure
  • Name: Lesopitron (dihydrochloride)
  • Chemical Name: 2-[4-[4-(4-chloropyrazol-1-yl)butyl]piperazin-1-yl]pyrimidine,dihydrochloride
  • CAS Number: 132449-89-9
  • Molecular Formula: C15H23Cl3N6
  • Molecular Weight: 393.74200
  • Catalog: Signaling Pathways GPCR/G Protein 5-HT Receptor
  • Create Date: 2017-05-07 09:52:17
  • Modify Date: 2025-08-25 19:10:46
  • Lesopitron dihydrochloride is a full and selective 5-HT1A receptor agonist with IC50 of 125 nM in rat hippocampal membranes.

Name 2-[4-[4-(4-chloropyrazol-1-yl)butyl]piperazin-1-yl]pyrimidine,dihydrochloride
Synonyms E 4424
C15H21ClN6.2HCl
LESOPITRON DIHYDROCHLORIDE
Lesopitron (dihydrochloride)
Description Lesopitron dihydrochloride is a full and selective 5-HT1A receptor agonist with IC50 of 125 nM in rat hippocampal membranes.
Related Catalog
Target

IC50:125 nM (5-HT1A receptor, in rat hippocampal membranes)[1]

In Vitro In vitro binding and autoradiographic studies with [3H]8-OH-DPAT and [3H]Lesopitron as radioligands confirm that Lesopitron binds to 5-HT1A receptors in the rat brain with a relatively high affinity (pKi=7.35). As expected of a full agonist at postsynaptic 5-HT1A receptors, Lesopitron (IC50=125 nM) inhibits forskolin-stimulated adenylate cyclase activity in rat hippocampal membranes to the same extent as 5-HT. Lesopitron inhibits the firing of serotoninergic neurons both in vitro (in brainstem slices, IC50=120 nM)[1].
In Vivo Lesopitron inhibits the firing of serotoninergic neurons both in vivo (in chloral hydrate-anaesthetized rats, ID50=35 μg/kg i.v.)[1]. Lesopitron administered at a dose which induces anxiolytic behaviour in rats (30 μg/kg, i.p.) markedly reduces 5-HT levels (to 45% of the basal value) in cortical perfusates[2].
Animal Admin Rats[2] Male Wistar rats weighing 270-300 g, are used. Lesopitron is administered either through the dialysis probe (dissolved in artificial CSF) or i.p. (dissolved in 0.9% saline, 2 mL/kg body weight).
References

[1]. Haj-Dahmane S, et al. Interactions of Lesopitron (E-4424) with central 5-HT1A receptors: in vitro and in vivo studies in the rat. Eur J Pharmacol. 1994 Apr 1;255(1-3):185-96.

[2]. Ballarín M, et al. Effect of acute administration of the 5-HT1A receptor ligand, Lesopitron, on rat cortical 5-HT and dopamine turnover. Br J Pharmacol. 1994 Oct;113(2):425-30.

Density 1.31g/cm3
Boiling Point 504ºC at 760mmHg
Molecular Formula C15H23Cl3N6
Molecular Weight 393.74200
Flash Point 258.6ºC
Exact Mass 392.10500
PSA 50.08000
LogP 3.53580
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