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Dopamine receptor agonists and antagonists act on the five G protein-coupled receptors that respond to dopamine. The receptors form two groups, with D1 and D5 in the D1-like class and D2, D3 and D4 in the D2-like class. D1-like receptors stimulate adenylyl cyclase, whereas D2-like receptors inhibit it and lower cyclic adenosine monophosphate (cAMP) levels. Dopamine signaling controls movement, reward, motivation and hormone release, and is studied in Parkinson's disease and psychiatric research. Ligands here include the agonist rotigotine HCl, the D2 antagonists L-741626 and domperidone, and the D3-preferring ligand BP897.
PNU-177864 is a selective, orally active antagonist of the dopamine D3 receptor. It is known to induce phospholipid metabolism in vivo and exhibits potential anti-schizophrenia effects. This compound is valuable for research focused on dopaminergic modulation and the exploration of therapeutic strategies for schizophrenia.
Synonyms: SCH-23388 hydrochloride
(S)-SCH-23390 hydrochloride is a potent dopamine D1-like receptor antagonist, specifically targeting the D1 and D5 receptor subtypes with Ki values of 0.2 nM and 0.3 nM, respectively. This compound is widely utilized in neuropharmacology research to elucidate the role of dopamine signaling in various physiological and pathological processes. Its application in investigating dopaminergic dysfunction makes it valuable for studies related to neurological disorders and therapeutic interventions.
Eticlopride hydrochloride is a selective antagonist of the dopamine D2 receptor, demonstrating high binding affinity for D2, α1-adrenergic, α2-adrenergic, and various serotonin receptors. This compound has KIs of 0.09 nM for D2, 112 nM for α1, 699 nM for α2, 6220 nM for 5HT1, and 830 nM for 5HT2. Eticlopride hydrochloride is primarily utilized in research related to antipsychotic mechanisms and dopamine signaling pathways.
Piperacetazine is a phenothiazine antipsychotic that primarily functions as a dopamine receptor antagonist. It has demonstrated inhibitory effects on the transcriptional activity of the PAX3::FOXO1 fusion protein, along with antitumor activity, exhibiting an IC50 of 7.627 μM against PANC-1 cells. This compound is applicable in research related to schizophrenia, pancreatic cancer, and other tumor types, making it a valuable tool for studying both neuropsychiatric disorders and cancer biology.
Synonyms: Canadine
Tetrahydroberberine is a potent dopamine D2 receptor antagonist, which modulates dopaminergic signaling pathways. Its biological activity includes potential gastrointestinal benefits, such as enhancing gastric function and alleviating gastric pressure. This compound is of interest in research applications focused on neuropharmacology and gastrointestinal physiology.
L-745870 is a highly selective antagonist of the dopamine D4 receptor, demonstrating a Ki of 0.43 nM. It exhibits limited affinity for D2 (Ki of 960 nM) and D3 (Ki of 2300 nM) receptors, along with moderate affinity for 5-HT2 receptors, sigma sites, and α-adrenoceptors. This compound is suitable for studies investigating the role of the dopamine D4 receptor in neurological disorders and provides insights into neuropharmacology-related research applications.
Synonyms: (Z)-Clopenthixol
Zuclopenthixol is a thioxanthene derivative that functions as a mixed antagonist of dopamine D1 and D2 receptors. This compound has demonstrated antipsychotic properties and is primarily utilized in research related to neuropharmacology and the treatment of schizophrenia. Its ability to modulate dopaminergic signaling makes it a valuable tool for studying dopamine-related disorders and therapeutic interventions.
Synonyms: Propericiazine; RP 8909
Pericyazine is a selective D2-dopamine receptor antagonist primarily utilized in the management of severe anxiety states and psychosis. This first-generation antipsychotic demonstrates key biological activities, including adrenolytic and anticholinergic effects, as well as potential extrapyramidal symptoms. Research applications of pericyazine extend to neuropharmacology, helping to elucidate the role of dopamine in psychiatric disorders.
Fluphenazine decanoate functions as a CNS-penetrant dopamine D2 receptor antagonist and is classified as a long-acting phenothiazine neuroleptic. This compound is primarily utilized in the study of schizophrenia and offers significant insights into dopaminergic pathways and neuropsychiatric disorders. Its prolonged action makes it a valuable tool for examining chronic treatment effects in preclinical research.
Synonyms: (-)-Remoxipride hydrochloride
(S)-Remoxipride hydrochloride is a selective antagonist of the dopamine D2 receptor, exhibiting an IC50 value of 1.57 μM. This compound is primarily utilized in research related to psychotic disorders, aiding in the exploration of dopamine receptor pathways and their roles in neuropsychiatric conditions. Its specificity for the D2 receptor positions it as a valuable tool for studying schizophrenia and other related disorders.
D-Tetrahydropalmatine is an isoquinoline alkaloid that functions as a dopamine receptor antagonist, with a preferential affinity for D1 receptors. This compound exhibits significant inhibitory activity against organic cation transporter 1 (OCT1). D-Tetrahydropalmatine is utilized in research focused on neurological disorders and the modulation of dopamine signaling pathways. Its unique properties make it a valuable tool in the exploration of receptor interactions and pharmacological investigations.
Synonyms: EXP999; RP9965
Metopimazine is a selective dopamine D2 receptor antagonist belonging to the phenothiazine class. It primarily targets the chemoreceptor trigger zone, effectively inhibiting nausea and vomiting associated with chemotherapy while maintaining low central side effects due to limited blood-brain barrier penetration. This compound is indicated for the management of chemotherapy-induced nausea and vomiting, though caution is advised regarding its application in acute gastroenteritis due to potential risks. Metopimazine is primarily utilized in research related to anti-dopaminergic anti-emetic therapies.
L-745870 hydrochloride is a potent and selective antagonist of the dopamine D4 receptor, exhibiting a Ki of 0.43 nM. This compound displays significantly lower affinity for D2 and D3 receptors, with Ki values of 960 nM and 2300 nM, respectively, and has moderate interaction with 5-HT2 receptors, sigma sites, and α-adrenoceptors. L-745870 hydrochloride is suited for research applications investigating the role of dopamine D4 receptors in neuropsychiatric disorders and drug development.
NGB 2904 is a potent and selective antagonist of the dopamine D3 receptor, demonstrating a Ki value of 1.4 nM. This compound exhibits high selectivity for the D3 receptor compared to other targets, including D2, 5-HT2, and α1 receptors, with Kis ranging from 217 to >10,000 nM. NGB 2904 effectively antagonizes Quinpirole-stimulated mitogenesis, making it a valuable tool for research into dopamine-related pathways and potential therapeutic applications in neuropsychiatric disorders.
Synonyms: Propiopromazine hydrochloride
Propionylpromazine hydrochloride is a dopamine receptor D2 (DRD2) antagonist. This compound exhibits potential in the modulation of dopaminergic signaling, making it relevant for studies related to Parkinson's disease and other disorders associated with dopamine dysregulation. Its ability to inhibit DRD2 may aid in understanding the physiological and pathological roles of dopamine in various neurological contexts.
Synonyms: 1-Phenylbutan-1-one; 1-Phenyl-1-butanone
Butyrophenone is a dopamine receptor (DA Receptor) antagonist that plays a significant role in neuropharmacological studies. This compound is primarily utilized in research focused on mental disorders such as schizophrenia and bipolar disorder. Its ability to modulate dopaminergic signaling makes it valuable for investigating the underlying mechanisms of these conditions and potential therapeutic interventions.
PG01037 dihydrochloride is a potent and selective antagonist of the dopamine D3 receptor, with a dissociation constant (Ki) of 0.7 nM. This compound is valuable in research applications exploring the role of dopamine signaling in various neurological and psychiatric disorders. Its ability to inhibit D3 receptor activity makes it a pivotal tool for investigating potential therapeutic interventions and understanding dopamine-related pathways.
Synonyms: R33812 monomaleate
Domperidone monomaleate is a selective antagonist of the dopamine D2 receptor. This compound exhibits notable antiemetic and prokinetic properties by influencing the chemoreceptor trigger zone and enhancing gastrointestinal motility. It is primarily utilized in research related to gastrointestinal disorders and neuropharmacology.
Fallypride is a potent antagonist of the dopamine D2 and D3 receptors, providing valuable insights into dopaminergic function. As a radiolabeled compound (Fallypride-18F), it serves as an effective positron emission tomography (PET) radiotracer for studying neurological disorders and neuropharmacology. Its application in imaging facilitates the exploration of dopamine-related mechanisms in various psychiatric and neurodegenerative conditions.
Clopenthixol is a thiaquinoline compound that acts as an antagonist of D1 and D2 dopamine receptors. It exhibits inhibitory effects comparable to those of phenothiazine antipsychotics, making it valuable in the treatment of schizophrenia and other mental disorders. This compound is primarily utilized in research related to psychiatric conditions and the exploration of dopamine regulation in the central nervous system.
Dopamine D4 receptor antagonist-1 is a selective antagonist for the dopamine D4 receptor (DRD4), exhibiting a Ki of 9.0 nM for the Hd4.2 cell line. This compound is valuable for research into the pathophysiology of schizophrenia, providing insights into dopaminergic signaling pathways and potential therapeutic interventions. Its specificity and potency make it a useful tool for studying DRD4-related biological processes.
Synonyms: LIN-1418 hydrochloride
Sultopride hydrochloride is a selective antagonist of the dopamine D2 receptor, exerting its primary mechanism of action through blocking dopamine signaling. This compound is chiefly utilized in research investigating the role of dopamine in neuropsychiatric disorders and the pharmacological modulation of dopaminergic pathways. Its ability to selectively inhibit D2 receptor activity makes it a valuable tool for exploring dopamine-related biological processes and the development of therapeutic agents.
Bromopride is a selective, irreversible antagonist of the dopamine D2 receptor, demonstrating significant utility in pharmacological research. This compound effectively crosses the blood-brain barrier, inhibiting the vomiting center and enhancing gastrointestinal motility, thereby exhibiting both antiemetic and prokinetic properties. Bromopride's ability to block dopamine-mediated vomiting reflexes and stimulate gastrointestinal smooth muscle contraction makes it a valuable reagent for investigating digestive system disorders, particularly gastric hypomotility, nausea, and vomiting, without adversely affecting abdominal wall healing in animal models.
Synonyms: PNU-101387G; U-101387G
Sonepiprazole is a selective D4 dopamine receptor antagonist, exhibiting Ki values of 3.6 nM for the rat D4 receptor and 10.1 nM for the human D4.2 receptor, while showing weaker affinities of 5147 nM and 7430 nM for the rat D2 dopamine and histamine H1 receptors, respectively. This compound demonstrates potential for modulating dopaminergic signaling and is useful in investigating the role of D4 receptors in neurological and psychiatric conditions. Sonepiprazole may serve as a valuable tool for researchers studying the therapeutic implications of dopamine receptor antagonism.
NGD94-1 is a potent and selective antagonist of the dopamine D4 receptor, exhibiting high affinity for the human D4.2 receptor (Ki = 3.6 nM). This compound plays a significant role in modulating cognitive functions within the frontostriatal system and regulates dopaminergic transmission, particularly in Phencyclidine (PCP)-induced models. NGD94-1 is suitable for applications in neurological disease research, providing valuable insights into dopaminergic mechanisms and their impact on cognition.
