S38093 free base

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 555223

CAS#: 862896-30-8 (free base)

Description: S38093 is an inverse agonist at histamine H3 receptors. S 38093 displays a moderate affinity for rat, mouse and human H3 receptors (Ki=8.8, 1.44 and 1.2µM, respectively) with no affinity for other histaminergic receptors. In cellular models, the compound was able to antagonize mice H3 receptors (KB=0.65µM) and to suppress cAMP decrease induced by an H3 agonist via human H3 receptors (KB=0.11µM).

Price and Availability


USD 950
USD 3250

USD 1450
USD 4250

USD 2650
USD 6850

S38093 free base, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 555223
Name: S38093 free base
CAS#: 862896-30-8 (free base)
Chemical Formula: C17H24N2O2
Exact Mass: 288.1838
Molecular Weight: 288.391
Elemental Analysis: C, 70.80; H, 8.39; N, 9.71; O, 11.10

Related CAS #: 862896-30-8 (free base)   1222097-72-4 (HCl)    

Synonym: S38093 free base; S-38093; S 38093;

IUPAC/Chemical Name: 4-(3-(hexahydrocyclopenta[c]pyrrol-2(1H)-yl)propoxy)benzamide


InChi Code: InChI=1S/C17H24N2O2/c18-17(20)13-5-7-16(8-6-13)21-10-2-9-19-11-14-3-1-4-15(14)12-19/h5-8,14-15H,1-4,9-12H2,(H2,18,20)


Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

Harmonized System Code:


1: Chaumette T, Chapuy E, Berrocoso E, Llorca-Torralba M, Bravo L, Mico JA, Chalus M, Eschalier A, Ardid D, Marchand F, Sors A. Effects of S 38093, an antagonist/inverse agonist of histamine H3 receptors, in models of neuropathic pain in rats. Eur J Pain. 2018 Jan;22(1):127-141. doi: 10.1002/ejp.1097. Epub 2017 Sep 6. PubMed PMID: 28877402.

2: Sors A, Panayi F, Bert L, Favale D, Nosjean O, Audinot V, Arrang JM, Buisson B, Steidl E, Delbos JM, Huhtala T, Kontkanen O, Chollet AM, Casara P, Lestage P. Mechanistic characterization of S 38093, a novel inverse agonist at histamine H3 receptors. Eur J Pharmacol. 2017 May 15;803:11-23. doi: 10.1016/j.ejphar.2017.03.013. Epub 2017 Mar 21. PubMed PMID: 28336400.

3: Panayi F, Sors A, Bert L, Martin B, Rollin-Jego G, Billiras R, Carrié I, Albinet K, Danober L, Rogez N, Thomas JY, Pira L, Bertaina-Anglade V, Lestage P. In vivo pharmacological profile of S 38093, a novel histamine H3 receptor inverse agonist. Eur J Pharmacol. 2017 May 15;803:1-10. doi: 10.1016/j.ejphar.2017.03.008. Epub 2017 Mar 14. PubMed PMID: 28315340.

4: Guilloux JP, Samuels BA, Mendez-David I, Hu A, Levinstein M, Faye C, Mekiri M, Mocaer E, Gardier AM, Hen R, Sors A, David DJ. S 38093, a histamine H(3) antagonist/inverse agonist, promotes hippocampal neurogenesis and improves context discrimination task in aged mice. Sci Rep. 2017 Feb 20;7:42946. doi: 10.1038/srep42946. PubMed PMID: 28218311; PubMed Central PMCID: PMC5317168.

5: Sors A, Krazem A, Kehr J, Yoshitake T, Dominguez G, Henkous N, Letondor C, Mocaer E, Béracochéa DJ. The Synergistic Enhancing-Memory Effect of Donepezil and S 38093 (a Histamine H(3) Antagonist) Is Mediated by Increased Neural Activity in the Septo-hippocampal Circuitry in Middle-Aged Mice. Front Pharmacol. 2016 Dec 22;7:492. doi: 10.3389/fphar.2016.00492. eCollection 2016. PubMed PMID: 28066242; PubMed Central PMCID: PMC5177663.