2. Signaling Pathways
  3. GPCR/G Protein
    Neuronal Signaling
  4. Dopamine Receptor

Dopamine Receptor

Dopamine Receptor

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Dopamine Receptors are a class of G protein-coupled receptors that are prominent in the vertebrate central nervous system (CNS). The neurotransmitter dopamine is the primary endogenous ligand for dopamine receptors. Dopamine receptors are implicated in many neurological processes, including motivation, pleasure, cognition, memory, learning, and fine motor control, as well as modulation of neuroendocrine signaling. Abnormal dopamine receptor signaling and dopaminergic nerve function is implicated in several neuropsychiatric disorders. Thus, dopamine receptors are common neurologic drug targets; antipsychotics are often dopamine receptor antagonists while psychostimulants are typically indirect agonists of dopamine receptors. There are at least five subtypes of dopamine receptors, D1, D2, D3, D4, and D5. The D1 and D5 receptors are members of the D1-like family of dopamine receptors, whereas the D2, D3 and D4receptors are members of the D2-like family.

Dopamine Receptor Isoform Specific Products:

Dopamine Receptor Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-19019
    Y-20024 hydrochloride
    		Antagonist
    Y-20024 hydrochloride is an orally active D2 receptor antagonist with blood-brain barrier permeability. Y-20024 hydrochloride can inhibit Apomorphine (HY-12723)-induced ADHD in mice. Y-20024 hydrochloride can inhibit Apomorphine-induced vomiting in dogs. Y-20024 hydrochloride has prolactin-promoting activity. Y-20024 hydrochloride can be used in research on neurological disorders such as ADHD and vomiting.
    Y-20024 hydrochloride
  • HY-167875
    Neflumozide
    		Antagonist
    Neflumozide (HRP 913) is an orally active benzisoxazole derivative and a potent dopamine antagonist with antipsychotic activity. Neflumozide can be utilized in psychosis research.
    Neflumozide
  • HY-106904
    Nexopamil
    		Antagonist
    Nexopamil is a calcium antagonist of Ca2+ channel, 5HT2, 5HT1A, 5HT1C and dopamine D2 receptors. Nexopamil exhibits vasodilatory, cardioprotective, and platelet aggregation inhibiting effects. Nexopamil can be used for researches of stable or unstable angina and possibly of peripheral arterial occlusive disease.
    Nexopamil
  • HY-173044
    5-HT1AR/5-HT6R ligand-1
    		Antagonist
    5-HT1AR/5-HT6R ligand-1 (Compound PP13) is the ligand for 5-HT receptor that exhibits good affinity to 5-HT1AR, 5-HT6R and 5-HT7R (Ki of 19, 69 and 198 nM, respectively), thereby inhibiting the cAMP production in HEK293 cell with EC50 of 1535, 488 and 53 nM, respectively. 5-HT1AR/5-HT6R ligand-1 exhibits anti-proliferative activity against a variety of cancer cells (IC50 for 1321N1, U87MG, MCF7, and AsPC-1 is 9.6, 13.6, 19.3 and 14.6 μM, respectively). 5-HT1AR/5-HT6R ligand-1 also exhibits antagonist activity for dopamine receptor D2R with Ki of 1903 nM.
    5-HT1AR/5-HT6R ligand-1
  • HY-130041
    Tropapride
    		Antagonist
    Tropapride is a dopamine D2 receptor antagonist. Tropapride can be used for the research of neurological disease.
    Tropapride
  • HY-106605S
    Flumezapine-d8 hydrochloride
    		Antagonist
    Flumezapine-d8 (LY 120363-d8) hydrochloride is deuterated labeled Flumezapine hydrochloride. Flumezapine hydrochloride is a potent and balanced antagonist of the dopamine D2 receptor and the 5-hydroxytryptamine receptor (5-HT receptor). Flumezapine hydrochloride does not alter the increase in serum cortisol caused by κ-opioid receptor agonists. Flumezapine hydrochloride inhibits the conditioned avoidance response in rats and has a low risk of extrapyramidal side effects. Flumezapine hydrochloride can be used in antipsychotic research.
    Flumezapine-d<sub>8</sub> hydrochloride
  • HY-14782A
    Adoprazine hydrochloride
    		Antagonist
    Adoprazine (SLV313) hydrochloride is a full 5-HT1A receptor agonist with a pEC50 of 9 at cloned h5-HT1A receptors. Adoprazine hydrochloride is a full D2 and D3 receptor antagonist with pA2s of 9.3 and 8.9 at hD2 and hD3 receptors, respectively. Adoprazine has the characteristics of atypical antipsychotics.
    Adoprazine hydrochloride
  • HY-A0188
    Norzine dimalate
    		Antagonist
    Norzine dimalate (Thiethylperazine dimalate), a Phenothiazine (HY-Y0055) derivate, is an orally active and potent dopamine D2-receptor and histamine H1-receptor antagonist. Norzine dimalate is also a selective ABCC1activator that reduces amyloid-β load in mice. Norzine dimalate has anti-emetic, antipsychotic and antimicrobial effects.
    Norzine dimalate
  • HY-163703
    D4R antagonist-2
    		Antagonist
    D4R antagonist-2 (compound 33) is a D4R antagonist. D4R antagonist-2 has a IC50 value of 210 nM, and a Ki value of 59 nM for D4R. D4R antagonist-2 can be used in the Parkinson's disease research.
    D4R antagonist-2
  • HY-103404
    PNU-96415E
    		Antagonist
    PNU-96415E is a selective D4/5-HT2A antagonist. PNU-96415E may have potential antipsychotic efficacy.
    PNU-96415E
  • HY-101349A
    L 741742 hydrochloride
    		Antagonist
    L 741742 hydrochloride is a highly selective and brain-penetrant D4 dopamine receptor antagonist, with Ki values of 3.5 nM, 770 nM and >1700 nM for human D4, D3 and D2 receptors, respectively. L 741742 hydrochloride suppresses PDGFRβ, ERK1/2, and mTOR signaling pathways, and impairs autophagic flux while disrupting lysosomal function.L 741742 hydrochloride induces G0/G1 cell-cycle arrest and apoptosis, promotes neuronal differentiation of normal human neural stem cells, selectively inhibits growth and clonogenic potential of glioblastoma neural stem cells and primary glioblastoma tumor cells, exerts synergistic effects with Temozolomide (TMZ) (HY-17364) against glioblastoma neural stem cells in vitro, and inhibits glioblastoma neural stem cell xenograft growth in immunocompromised mice. L 741742 hydrochloride can be used for the research of schizophrenia and glioblastoma.
    L 741742 hydrochloride
  • HY-107434
    Molindone
    		Antagonist
    Molindone ((±)-Molindone), an indole derivative, is a potent dopamine D2 and D5 receptor antagonist. Molindone ((±)-Molindone) can be used for the research of schizophrenia and severe mental illness.
    Molindone
  • HY-119980B
    Fluphenazine hydrochloride
    		Antagonist
    Fluphenazine hydrochloride is a potent, orally active phenothiazine-based dopamine receptor antagonist. Fluphenazine hydrochloride blocks neuronal voltage-gated sodium channels. Fluphenazine hydrochloride acts primarily through antagonism of postsynaptic dopamine-2 receptors in mesolimbic, nigrostriatal, and tuberoinfundibular neural pathways. Fluphenazine hydrochloride can antagonize Methylphenidate-induced stereotyped gnawing and inhibit climbing behaviour in mice. Fluphenazine hydrochloride can be used for researching psychosis and painful peripheral neuropathy associated with diabetes and has potential to inhibit SARS-CoV-2.
    Fluphenazine hydrochloride
  • HY-111155
    RBI-257 maleate
    		Antagonist
    RBI-257 maleate is a potent dopamine D4 receptor antagonist with a Ki value of 0.3 nM.
    RBI-257 maleate
  • HY-103109
    Melperone hydrochloride
    		Antagonist
    Melperone hydrochloride is a butyrophenone with atypical antipsychotic properties. Melperone hydrochloride is a multireceptor antagonist with Kds of 102 nM, 180 nM, 180 nM, and 150 nM for 5-HT2A, dopamine D2, α1-adrenergic, and α2-adrenergic receptors, respectively. Melperone hydrochloride has weak binding to histamine H1, 5-HT2C, 5-HT1A, 5-HT1D, and muscarinic receptors, with Kd values ​​of 580 nM, 2100 nM, 2200 nM, 3400 nM, >10000 nM, respectively. Melperone hydrochloride is also a CYP2D6 inhibitor. Melperone hydrochloride can be used for the study of schizophrenia, and agitation in the elderly.
    Melperone hydrochloride
  • HY-14325A
    L-745870 trihydrochloride
    		Antagonist
    L-745870 trihydrochloride is a potent, selective, brain-penetrant and orally active dopamine D4 receptor antagonist with a Ki of 0.43 nM. L-745870 trihydrochloride shows weaker affinity for D2 (Ki of 960 nM) and D3 (Ki of 2300 nM) receptors, and exhibits moderate affinity for 5-HT2 receptors, sigma sites and α-adrenoceptors.
    L-745870 trihydrochloride
  • HY-109167A
    Aramisulpride hydrochloride
    		Antagonist
    Aramisulpride hydrochloride is a 5-HT7 receptor antagonist with a Ki value of 22 nM. Aramisulpride hydrochloride is a D2/D3 receptor antagonist with a Ki value of 140 nM for D2R and a Ki value of 13.9 nM for D3R. Aramisulpride hydrochloride can be used in psychiatric research.
    Aramisulpride hydrochloride
  • HY-119463
    Trepipam
    		Antagonist
    Trepipam (Trimopam; SCH-12679) is a D1-dopamine receptor antagonist. Trepipam can reduce the self-injurious behavior in 6-OHDA-lesioned rats. Trepipam can be used in the research of epilepsy and anxiety neurosis.
    Trepipam
  • HY-15856BR
    Flupentixol dihydrochloride (Standard)
    		Antagonist
    Flupentixol (dihydrochloride) (Standard) is the analytical standard of Flupentixol (dihydrochloride). This product is intended for research and analytical applications. Flupentixol is an orally active D1/D2 dopamine receptor antagonist and new PI3K inhibitor (PI3Kα IC50=127 nM). Flupentixol shows anti-proliferative activity to cancer cells and induces apoptosis. Flupentixol can also be used in schizophrenia, anxiolytic and depressive research.
    Flupentixol dihydrochloride (Standard)
  • HY-B1196A
    Tiapride
    		Antagonist
    Tiapride is a selective and orally active D2 and D3 dopamine receptors antagonist with IC50 values of 110-320 nM and 180 nM, respectively. Tiapride shows anti-dyskinetic activity and anxiolytic activity. Tiapride is a neuroleptic agent.
    Tiapride
Cat. No. Product Name / Synonyms Application Reactivity
Dopamine Receptor Isoform Comparison

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