WAY-100635 maleate salt


N-[2-[4-(2-Methoxyphenyl)-1-piperazinyl]ethyl]-N-2-pyridinylcyclohexanecarboxamide maleate salt
Empirical Formula (Hill Notation):
C25H34N4O2 · C4H4O4
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.



Quality Level




H2O: 25 mg/mL

SMILES string




InChI key


Gene Information

human ... HTR1A(3350)


WAY-100635 maleate salt has been used as a 5-HT1A serotonin receptor antagonist:
  • to study whether the behavior of the cleaner wrasse is regulated by serotonin activity
  • to block activity of 3,4 methylenedioxymethamphetamine (MDMA) used to induce oxytocin release in male Wistar rats to increase their social behavior
  • to study the role of serotonin during metamorphosis of the ascidian Phallusia mammillata larvae


5, 25 mg in glass bottle

Biochem/physiol Actions

WAY-100635 maleate salt is a highly selective 5-HT1A serotonin receptor antagonist. It has an ability to inhibit brexpiprazole, an antipsychotic drug that regulates serotonin-dopamine activity.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Elizabeth G Pitts et al.
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 42(10), 1962-1971 (2017-04-21)
3,4-Methylenedioxymethamphetamine (MDMA) increases sociality in humans and animals. Release of serotonin (5-HT) is thought to have an important role in the increase in social behaviors, but the mechanisms underlying these effects are poorly understood. Despite the advantages of nonhuman primate...
The role of serotonin in the modulation of cooperative behavior
Paula J, et al.
Behavioral ecology : official journal of the International Society for Behavioral Ecology, 26(4), 1005-1012 (2015)
Shrikant S Kolan et al.
Scientific reports, 9(1), 4276-4276 (2019-03-14)
A majority of lymphomas are derived from B cells and novel treatments are required to treat refractory disease. Neurotransmitters such as serotonin and dopamine influence activation of B cells and the effects of a selective serotonin 1A receptor (5HT1A) antagonist...
A Fletcher et al.
Behavioural brain research, 73(1-2), 337-353 (1996-01-01)
Although considerable progress has been made in characterising the 5-HT1A receptor using agonists, partial agonists or non-selective antagonists, further studies of 5-HT1A receptor function have been hindered by the lack of highly selective antagonists. The term 'silent' antagonist has been...
Naozumi Araragi et al.
Frontiers in pharmacology, 4, 97-97 (2013-08-13)
Firing activity of serotonin (5-HT) neurons in the dorsal raphe nucleus (DRN) is controlled by inhibitory somatodendritic 5-HT1A autoreceptors. This autoinhibitory mechanism is implicated in the etiology of disorders of emotion regulation, such as anxiety disorders and depression, as well...
Foodstuffs often provide a challenge for the water determination by Karl-Fischer. Instant Coffee is such a sample matrix and its water content has influence on quality and shelf life.
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