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5-HT2A receptor antagonist
Volinanserin is a highly selective 5-HT2A receptor antagonist.- Hugo R Arias, .et al. , Eur J Pharmacol, 2024, Mar 5:966:176329 PMID: 38253116
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5-HT1C receptor antagonist
Clozapine N-oxide is a major metabolite of Clozapine noted to decrease SR-2A (5-HT2 serotonin receptor) density in vitro.- Kazuhei Niitani, .et al. , J Pharmacol Sci, 2025, Sep;159(1):1-7 PMID: 40713343
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H1 antagonist
Asenapine shows high affinity (pKi) for numerous receptors, including the serotonin 5-HT1A (8.6), 5-HT1B (8.4), 5-HT2A (10.2), 5-HT2B (9.8), 5-HT2C (10.5), 5-HT5A (8.8), 5-HT6 (9.5), and 5-HT7 (9.9) receptors, the adrenergic α1 (8.9), α2A (8.9), α2B (9.5), and α2C (8.9) receptors, the dopamine D1 (8.9), D2 (8.9), D3 (9.4), and D4 (9.0) receptors, and the histamine H1 (9.0) and H2 (8.2) receptors.- Keisuke Obara, .et al. , Biol Pharm Bull, 2021, 44, 1140-1150 PMID: 34334499
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5-HT2C serotonin receptor antagonist
N-Desmethylclozapine is a potent and selective 5-HT2C serotonin receptor antagonist- Orwa Albitar, .et al. , Separation Science Plus, 2022, March 27
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5HT1A antagonist
WAY-100635 was originally believed to act as a selective 5-HT1A receptor antagonist, but subsequent research showed that it also acts as potent full agonist at the D4 receptor.
- Qi Liu, .et al. , Environ Sci Technol, 2024, Apr 30;58(17):7577-7587 PMID: 38630542
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5-HT2C receptor antagonist
Puerarin is one of several known isoflavones. Puerarin is a 5-HT2C receptor and benzodiazepine site antagonist. Puerarin is being investigated as a self-microemulsifying drug delivery system.- Takashi Azuma, .et al. , SEP PURIF TECHNOL, 2019, Apr; 212: 483-489
- Azuma T, .et al. , Environ Sci Pollut Res Int, 2017, Aug;24(23):19021-19030 PMID: 28660504
- Azuma T, .et al. , Sci Total Environ, 2016, Apr 1;548-549:189-197 PMID: 26802347
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5-HT Receptor antagonist
Agomelatine is a melatonergic agonist (MT1 and MT2 receptors) and 5-HT2C antagonist. -
5-HT3 receptor antagonist
Granisetron HCl is a serotonin 5-HT3 receptor antagonist -
5-HT2A serotonin receptor antagonist
Ketanserin (Vulketan Gel) is specific 5-HT2A serotonin receptor antagonist with a Ki of 2.5 nM for rat and human 5-HT2A. -
5-HT2/5-HT1 antagonist
Mianserin hydrochloride is a 5-HT2/5-HT1 antagonist. Has moderate affinity for 5-ht6 Non-selective 5-HT2 receptor antagonist. Has moderate affinity for 5-HT6. Antidepressant. -
5-HT1A and α1-adrenergic receptor antagonist
Naftopidil 2HCl is a selective 5-HT1A and α1-adrenergic receptor antagonist with IC50 of 0.1 μM and 0.2 μM, respectively. -
5-HT Receptors/D2 dopamine receptor antagonist
Olanzapine(Zyprexa) is a high affinity for 5-HT2 serotonin and D2 dopamine receptor antagonist. -
5-HT Receptors antagonist
Ondansetron is a serotonin 5-HT3 receptor antagonist used mainly as an antiemetic to treat nausea and vomiting, often following chemotherapy. -
5-HT (serotonin) and dopamine receptor antagonist
Ziprasidone hydrochloride monohydrate (CP 88059 hydrochloride monohydrate) is a combined 5-HT (serotonin) and dopamine receptor antagonist which exhibits potent effects of antipsychotic activity. -
5-HT7 receptor antagonist
SB269970 hydrochloride (SB-269970A) is a hydrochloride salt form of SB-269970, which is a 5-HT7 receptor antagonist with the pKi of 8.3, exhibits >50-fold selectivity against other receptors. -
5-HT1B receptor antagonist
SB-224289 hydrochloride is a selective 5-HT1B receptor antagonist, with anxiolytic effect. -
5-HT2 receptor antagonist
Eplivanserin is a potent, selective and orally available 5-HT2 receptor antagonist, with an IC50 of 5.8 nM in rat cortical membrane, and a Kd of 1.14 nM. -
5-HT2 receptor antagonist
Ritanserin (R 55667) is a highly potent, relatively selective, orally active, long acting antagonist of 5-HT2 receptor, with an IC50 of 0.9 nM, less active on Histamine H1, Dopamine D2, Adrenergic α1, Adrenergic α2 receptors. -
5-HT / dopamine receptor antagonist
Ziprasidone D8 is deuterium labeled Ziprasidone, which is a combined 5-HT (serotonin) and dopamine receptor antagonist which exhibits potent effects of antipsychotic activity. -
5-HT3 receptor antagonist
5-HT3 antagonist-4i is a 5-HT3 receptor antagonist which modulates the serotonergic system. -
5-HT7 receptor antagonist
AVN-101 is a very potent 5-HT7 receptor antagonist, with slightly lesser potency toward 5-HT6, 5-HT2A, and 5HT-2C receptors. It is a milti-target drug candidate for the treatment of CNS disorders. -
5-HT1D receptor antagonist
BRL-15572 is a selective h5-HT1D antagonist, displaying 60-fold selectivity over h5-HT1B, and exhibiting little or no affinity for a range of other receptor types.
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5-HT3 antagonist
Tropisetron is a serotonin 5-HT3 receptor antagonist used mainly as an antiemetic to treat nausea and vomiting following chemotherapy. -
Serotonin 5HT3-receptor antagonist
Alosetron Hydrochloride(1:X) (GR 68755 Hydrochloride(1:X)) is a Serotonin 5HT3-receptor antagonist that is used in treatment of irritable bowel syndrome. -
5-HT6 receptor antagonist
SB271046 Hydrochloride is a potent, selective and orally active 5-HT6 receptor antagonist with pKi of 8.9. -
5-HT antagonist
Tegaserod functions as a motility stimulant, achieving its desired therapeutic effects through activation of the 5-HT4 receptors of the enteric nervous system in the gastrointestinal tract. It also stimulates gastrointestinal motility and the peristaltic reflex, and allegedly reduces abdominal pain. Additionally, tegaserod is a 5-HT2B receptor antagonist. -
D2/5-HT2 receptor antagonist
Blonanserin is a D2/5-HT2 receptor antagonist; atypical antipsychotic. -
5-HT4 receptor antagonist
5-HT4 antagonist 1 is a 5-HT4 receptor antagonist with a pKi of 9.6. -
5-HT2A receptor antagonist
Lumateperone Tosylate is a 5-HT2A receptor antagonist (Ki = 0.54 nM), a partial agonist of presynaptic D2 receptors and an antagonist of postsynaptic D2 receptors (Ki = 32 nM), and a SERT blocker (Ki = 61 nM). -
5-HT6R antagonist
Lu AE58054 is a potent and selective 5-HT6 receptor antagonist. -
5-HT3 receptor antagonist
Pancopride is a new potent and selective 5-HT3 receptor antagonist. -
5-HT2A and 5-HT2C receptors antagonist
Deramciclane has a high affinity for 5-HT2A and 5-HT2C receptors; it acts as an antagonist at both receptor subtypes and has inverse agonist properties at the 5-HT2C receptors without direct stimulatory agonist. -
5-HT1B receptor agonist
Eletriptan is a selective 5-hydroxytryptamine 1B/1D (5-HT1B) receptor agonist -
5-HT1A receptor antagonist
NAD 299 hydrochloride (Robalzotan) is a selective, high affinity 5-HT1A receptor antagonist (Ki = 0.6 nM in vitro). -
5-HT Receptor antagonist
Tandospirone is a partial agonist at 5HT1A receptors. It significantly reduces haloperidol-induced bradykinesia in a dose-dependent manner. -
5-HT1A receptor antagonist
NAN-190 is a drug and research chemical widely used in scientific studies. It was previously believed to act as a selective 5-HT1A receptor antagonist, but a subsequent discovery showed that it also potently blocks the α2-adrenergic receptor. -
5HT2A antagonist
Ketanserin tartrate is a salt of Ketanserin. Ketanserin is reported to have a high affinity for multiple G protein-coupled receptors, such as serotonin receptors. -
5-HT4 Receptor Antagonist
SDZ 205-557 is a potent, selective 5-HT4 serotonin receptor antagonist. -
5-HT3 receptor antagonist
Tropanserin acts as a potent and selective 5-HT3 receptor antagonist. -
5-HT6 serotonin receptor antagonist
SB 258585 hydrochloride has been found to be a selective and potent SR-6 antagonist. This compound displays more than a 160-fold selectivity over other serotonin receptor subtypes. -
5-HT6 antagonist
SB 399885 hydrochloride is a potent, brain penetrant, and orally active SR-6 antagonist. It displays > 200-fold selectivity for SR-6 over other serotonin receptors (pKi values are 9.11, 8.81 and 9.02 for human recombinant, native rat and native human SR-6 receptors, respectively).

