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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.
Synonyms: Glovadalen
Glovadalenum is a positive allosteric modulator of the dopamine D1 receptor. This compound enhances dopamine receptor signaling, making it valuable for research in neuropharmacology and neurodegenerative diseases. Its modulation of dopaminergic pathways offers potential insights into the treatment of conditions such as schizophrenia and Parkinson's disease.
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Propionylpromazine-d6 hydrochloride is a deuterium-labeled derivative of Propionylpromazine hydrochloride, a potent dopamine receptor D2 (DRD2) antagonist. This reagent is primarily utilized in pharmacological research focusing on Parkinson's disease, enabling the study of dopamine signaling pathways and receptor interactions. The stable isotope labeling provides enhanced analytical precision, making it suitable for advanced bioanalytical applications.
Synonyms: TAK-906
Trazpiroben is a selective antagonist of the dopamine D2 and D3 receptors, primarily utilized for investigating the pathophysiology and treatment of moderate-to-severe gastroparesis. Its inhibition of these receptors plays a significant role in regulating gastrointestinal motility. Trazpiroben is a valuable tool for researchers exploring the therapeutic potential and underlying mechanisms of dopamine-related gastrointestinal disorders.
Acetophenazine is an antipsychotic agent classified as a phenothiazine derivative, primarily targeting dopamine D2 receptors in the central nervous system. This compound exhibits significant efficacy in managing symptoms associated with psychotic disorders, including schizophrenia and anxiety-related depression. Its mechanism of action makes it a valuable tool for researchers investigating the pharmacological effects and treatment strategies for these mental health conditions.
Fosopamine hydrochloride is a dopamine receptor D agonist, primarily targeting the dopamine receptor pathways. It has demonstrated significant utility in research related to hypertension, aiding in the exploration of cardiovascular mechanisms and blood pressure regulation. This compound may provide insights into both the physiological and pathological roles of dopamine signaling in hypertension-related studies.
Synonyms: CI 1030
PD 172760 is a selective antagonist of the D4 receptor, playing a significant role in neurotransmission modulation. Its action may enhance understanding of psychosis and related neuropsychiatric disorders. This compound is valuable for researchers investigating the therapeutic potential of targeting D4 receptors in various neurological and psychiatric conditions.
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YM-50001 is a potent and selective antagonist of the dopamine D4 receptor, exhibiting a Ki value of 5.62 nM. This compound is utilized in research related to neurological diseases, contributing to the understanding of dopamine-mediated pathways and their implications in various neuropsychiatric disorders.
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PD 120697 is an orally active dopamine agonist that primarily targets dopamine receptors. It exhibits significant inhibition of striatal dopamine synthesis and reduces dopaminergic neuronal firing, leading to decreased spontaneous locomotor activity. PD 120697 also effectively reverses depression induced by Reserpine, making it a valuable tool for studying dopamine-related disorders and potential therapeutic interventions.
Synonyms: FLB-131
Eticlopride is a selective antagonist of the dopamine D2 receptor, demonstrating a high binding affinity for dopamine D2 as well as for α1-adrenergic, α2-adrenergic, 5HT1, and 5HT2 receptors, with Kis of 0.09, 112, 699, 6220, and 830 nM, respectively. This compound is primarily utilized in research related to antipsychotic drug development and elucidation of dopamine's role in neuropsychiatric disorders. Its pharmacological profile supports investigations into dopamine receptor modulation and its implications in various neurological conditions.
Dopamine D3 receptor ligand-3 is a selective ligand for the D3 receptor, exhibiting a high affinity with a Ki value of 3.6 nM. This compound demonstrates significant selectivity for the D3 receptor over the D2 receptor, with a Ki of 353 nM. It serves as a valuable tool for research applications focusing on dopaminergic signaling and related neurological disorders.
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PD 128907 is a selective dopamine D3 receptor inhibitor that effectively modulates dopaminergic signaling. The active (+) enantiomer exhibits high affinity for rat D3 receptors and demonstrates significant inhibitory effects on neuronal firing in the ventral tegmental area and substantia nigra pars compacta, with EC50 values of 33 nM and 38 nM, respectively. Additionally, it inhibits dopamine release in the caudate putamen with an EC50 of 66 nM. While PD 128907 primarily targets D3 receptors, evidence suggests its actions may also involve D2 autoreceptors, making it a valuable tool for exploring dopamine receptor pharmacology and neurobehavioral research.
Synonyms: MK-458; L-647339
Naxagolide hydrochloride is a selective agonist of the dopamine D2 receptor. This compound exhibits significant dopaminergic activity, making it valuable in research focused on Parkinsonism and related movement disorders. It serves as a potential therapeutic agent for understanding the modulation of dopaminergic signaling in neurological studies.
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CGS 15873A is an orally active benzopyranopyridine derivative that functions as a selective dopamine agonist. This compound activates dopamine receptors, making it valuable for studying the physiological and pharmacological roles of dopamine in the central nervous system. CGS 15873A is particularly relevant in research related to neurological disorders such as schizophrenia and Parkinson's disease.
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NGD 94-1 dimaleate is a selective antagonist targeting the dopamine D4 receptor, demonstrating a high affinity for the cloned human D4.2 receptor with a Ki value of 3.6 nM. This compound modulates cognitive functions within the frontostriatal system and effectively regulates dopaminergic transmission in models of Phencyclidine (PCP)-induced behavior. NGD 94-1 dimaleate is a valuable tool for research focused on neurological diseases and disorders involving dopaminergic signaling.
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FAUC 365 is a highly selective antagonist for the dopamine D3 receptor, exhibiting a Ki value of 0.5 nM. It demonstrates significantly lower binding affinities at D4.4, D2short, and D2Long receptors, with Ki values of 340 nM, 2600 nM, and 3600 nM, respectively. FAUC 365 is primarily utilized in research related to schizophrenia and Parkinson's disease, providing valuable insights into dopamine receptor interactions and potential therapeutic interventions.
SK609 hydrochloride is a selective agonist of the dopamine D3 receptor, exhibiting an EC50 of 1109 nM. This compound demonstrates significant biological activity in modulating dopamine signaling pathways, making it a valuable tool in Parkinson's disease research. Its unique properties facilitate the exploration of D3R-related mechanisms, contributing to the understanding of dopaminergic dysfunction in neurodegenerative disorders.
Raxlaprazine etomoxil is a small molecule compound that functions as a dopamine D2 and D3 receptor modulator. This compound shows high affinity for human recombinant D2L receptors, with an inhibition constant (Ki) of 1.95 nM, and effectively inhibits forskolin-stimulated cAMP accumulation with a half maximal effective concentration (EC50) of 3.72 nM. Raxlaprazine etomoxil is valuable for research focused on mental illnesses and neurological disorders.
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Dopamine D3 receptor ligand-1 is a potent and selective ligand for the dopamine D3 receptor, exhibiting a high affinity with a Ki value of 8 nM. This compound demonstrates an impressive 89-fold selectivity for the D3 receptor over the D2 receptor (D2 Ki = 715 nM). Its specificity makes it a valuable tool for investigating the D3 receptor's role in various neurobiological processes and for drug discovery efforts targeting dopamine-related disorders.
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ADTN is a dopamine receptor inhibitor that modulates dopamine neurotransmission. It demonstrates the ability to reduce dopamine-related signaling, which may help target conditions associated with excessive dopamine activity. ADTN is applicable in research focused on mental health disorders and cognitive function modulation, providing insights into therapeutic strategies for related pathologies.
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D-520 is a potent dopamine D2/D3 receptor agonist, demonstrating an EC50 of 4.73 nM and 2.18 nM for D2 and D3 receptors, respectively. This compound exhibits significant inhibitory effects on the formation of amyloid-beta (Aβ) aggregates and facilitates the disaggregation of both alpha-synuclein and Aβ aggregates in vitro. D-520 shows promising efficacy in animal models of Parkinson's disease, making it a valuable tool for research in Parkinson's disease and dementia associated with Parkinson’s disease.
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Pramipexole-d5 is a deuterium-labeled derivative of Pramipexole, a selective dopamine D2-type receptor agonist that effectively crosses the blood-brain barrier. With binding affinities (Kis) of 2.2 nM, 3.9 nM, 0.5 nM, and 1.3 nM for the D2-type, D2, D3, and D4 receptors respectively, Pramipexole-d5 serves as a valuable tool for exploring dopamine receptor interactions. This compound is particularly relevant for research into neurodegenerative disorders such as Parkinson's disease and conditions like restless legs syndrome.
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Metoclopramide dihydrochloride is a dopamine D2 receptor antagonist primarily used for its antiemetic effects. It demonstrates notable activity in managing nausea and vomiting, particularly in patients undergoing chemotherapy or surgery. This compound is also employed in research settings to explore the modulation of dopaminergic pathways and gastrointestinal motility.
PF2562 is a selective agonist of the dopamine D1 receptor, demonstrating a binding affinity with a Ki of 113 nM. It effectively stimulates cAMP production in human D1 receptor assays, exhibiting an EC50 value of 568 nM in HTRF assays. This compound is valuable for research applications involving dopamine receptor signaling and related neurological studies.
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SK609 is a selective agonist of the dopamine D3 receptor, enhancing dopamine and norepinephrine levels in the cerebral cortex. This compound has demonstrated efficacy in suppressing dyskinesias in preclinical models of Parkinson's disease and alleviating muscle twitches caused by L-dopa treatment. Additionally, SK609 has been shown to improve performance in sustained attention tasks by significantly reducing both misses and false alarms. Research indicates that SK609 may offer therapeutic potential for mitigating movement and cognitive deficits associated with Parkinson's disease.
UNC0006 is a β-arrestin-biased ligand targeting the dopamine D2 receptor. This compound is primarily utilized in the investigation of antipsychotic mechanisms and their effects on dopamine signaling pathways. Its unique bias towards β-arrestin pathways may offer new insights into therapeutic strategies for psychiatric disorders.
