2. Signaling Pathways
  3. Neuronal Signaling
  4. Sigma Receptor

Sigma Receptor

Sigma Receptor

Related Products

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Sigma receptors (subtypes sigma-1 and sigma-2) are a unique class of binding sites expressed throughout the mammalian body. The endogenous ligand for these sites has not been identified, but steroid hormones (particularly progesterone), sphingolipid-derived amines and N,N-dimethyltryptamine can bind with fairly high affinity.

The sigma-1 receptor (σ1R) is an endoplasmic reticulum (ER)-resident chaperone protein that acts like an inter-organelle signaling modulator. It participates in many biological processes including nociception, cancer, stroke, memory, drug addiction, cardiac activity, and Alzheimer’s disease. The sigma-2 (σ2R) receptor is overexpressed in various human tumors. It has been validated as a biomarker for proliferating tumors.

Sigma Receptor Related Products (87):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-108512
    PD 144418
    		98.32%
    PD 144418 is a highly affinity, potent and selective sigma 1 (σ1) receptor ligand (Ki values of 0.08 nM and 1377 nM for σ1 and σ2 respectively). PD 144418 devoids of any significant affinity for other receptors, ion channels and enzymes. PD 144418 shows potential antipsychotic activity.
    PD 144418
  • HY-134004
    Pentoxyverine
    		Agonist 98.91%
    Pentoxyverine (Carbetapentane) is an orally active sigma-1 receptor agonist, with Kis of 41 nM, 894 nM and 75 nM for σ1, σ2 and guinea-pig brain membran σ1, respectively. Pentoxyverine is a muscarinic antagonist. Pentoxyverine is a potent antitussive, anticonvulsant, and spasmolytic agent. Pentoxyverine can be used for inhibiting bronchial interceptor, weakening of cough reflex, bronchial smooth muscle relaxation and reduction of airway resistance.
    Pentoxyverine
  • HY-B1055
    Pentoxyverine citrate
    		Agonist 99.63%
    Pentoxyverine (Carbetapentane) citrate is an orally active sigma-1 receptor agonist, with Kis of 41 nM, 894 nM and 75 nM for σ1, σ2 and guinea-pig brain membrane σ1, respectively. Pentoxyverine citrate is a muscarinic antagonist. Pentoxyverine citrate is a potent antitussive, anticonvulsant, and spasmolytic agent. Pentoxyverine citrate can be used for inhibiting bronchial interceptor, weakening of cough reflex, bronchial smooth muscle relaxation and reduction of airway resistance.
    Pentoxyverine citrate
  • HY-130344
    SKF 83959
    		Modulator 98.93%
    SKF83959 is a potent and selective dopamine D1-like receptor partial agonist. SKF83959 Ki values for rat D1, D5, D2 and D3 receptors are 1.18, 7.56, 920 and 399 nM, respectively. SKF83959 is a potent allosteric modulator of sigma (σ)-1 receptor. SKF83959 belongs to benzazepine family and has improvements on cognitive dysfunction. SKF83959 can be used for the research of Alzheimer's disease and depression.
    SKF 83959
  • HY-108510
    Rimcazole dihydrochloride
    		Antagonist 99.80%
    Rimcazole (BW 234U) dihydrochloride is a carbazole derivative that acts in part as a sigma (σ) receptor antagonist. Rimcazole dihydrochloride also binds with moderate affinity to the dopamine transporter and inhibit dopamine uptake. Rimcazole dihydrochloride can reduce locomotor activity and sensitization. Rimcazole dihydrochloride also can be used for the research of cancer.
    Rimcazole dihydrochloride
  • HY-103412
    SKF 83959 hydrobromide
    		Modulator 99.86%
    SKF83959 hydrobromide is a potent and selective dopamine D1-like receptor partial agonist. SKF83959 hydrobromide Ki values for rat D1, D5, D2 and D3 receptors are 1.18, 7.56, 920 and 399 nM, respectively. SKF83959 hydrobromide is a potent allosteric modulator of sigma (σ)-1 receptor. SKF83959 hydrobromide belongs to benzazepine family and has improvements on cognitive dysfunction. SKF83959 hydrobromide can be used for the research of Alzheimer's disease and depression.
    SKF 83959 hydrobromide
  • HY-108509
    BMY-14802 hydrochloride
    		Antagonist 98.02%
    BMY-14802 hydrochloride (BMY-14802-1) is a selective and orally active sigma receptor antagonist with an IC50 of 112 nM. BMY-14802 hydrochloride is also a 5-HT1A and adrenergic α1 receptors agonist. BMY-14802 hydrochloride has antipsychotic effects.
    BMY-14802 hydrochloride
  • HY-14218
    Ditolylguanidine
    		Agonist 99.03%
    Ditolylguanidine (1,3-Di-o-tolylguanidine) is an agonist of sigma receptor (σ1/σ2 receptor) with Ki values of 69 and 21 nM for σ1 and σ2 receptors, respectively. Ditolylguanidine effectively inhibits the growth of small cell lung cancer cells. Ditolylguanidine can be used for the research of lung cancer.
    Ditolylguanidine
  • HY-13751
    SR-31747
    		99.86%
    SR-31747 is a sigma ligand with immunosuppressive and anti-inflammatory properties. SR-31747 blocks cell proliferation by inhibiting sterol isomerase.
    SR-31747
  • HY-B1216
    Oxeladin citrate
    		Agonist ≥98.0%
    Oxeladin citrate is an orally active and brain-penetrant cough suppressant as well as a selective sigma 1 receptor agonist (Ki = 25 nM). Oxeladin can be used for pulmonary diseases and stroke research.
    Oxeladin citrate
  • HY-101626
    Sigma-LIGAND-1
    		99.67%
    Sigma-LIGAND-1 is a selective sigma receptor ligand with an IC50s of 16 nM, 19 nM at the DTG site and the PPP site, respectively. Sigma-LIGAND-1 has a Ki of 4000 nM at the dopamine D2 receptor.
    Sigma-LIGAND-1
  • HY-100155
    4-IBP
    		Agonist 99.81%
    4-IBP is a selective σ1 agonist, binding to σ1 receptors with high affinity (Ki = 1.7 nM) and with slightly weaker affinity to σ2 receptors (Ki = 25.2 nM).
    4-IBP
  • HY-125821
    Sigma-1 receptor antagonist 1
    		Antagonist 98.64%
    Sigma‑1 receptor antagonist 1 (compound 137) is a potent and selective sigma-1 receptor (σ1R) antagonist, with a high binding affinity to σ1R receptor (Ki = 1.06 nM). Sigma‑1 receptor antagonist 1 exhibits antineuropathic pain activity and acts as a promising agent for the treatment of neuropathic pain.
    Sigma-1 receptor antagonist 1
  • HY-108512A
    PD 144418 oxalate
    		≥98.0%
    PD 144418 oxalate is a highly affinity, potent and selective sigma 1 (σ1) receptor ligand (Ki values of 0.08 nM and 1377 nM for σ1 and σ2 respectively). PD 144418 oxalate devoids of any significant affinity for other receptors, ion channels and enzymes. PD 144418 oxalate shows potential antipsychotic activity.
    PD 144418 oxalate
  • HY-125819
    Sigma-1 receptor antagonist 2
    		Antagonist 99.14%
    Sigma-1 receptor antagonist 2 is a potent and selective sigma 1 receptor (σ1 R) antagonist with Kis of 3.88 and 1288 nM for σ1 and σ2 receptor, respectively.
    Sigma-1 receptor antagonist 2
  • HY-136280
    Panamesine
    		99.43%
    Panamesine (EMD 57445) is a sigma receptor ligand, which has a high affinity (IC50 6 nM) and selectivity for sigma binding sites. Panamesine is a potential atypical neuroleptic agent.
    Panamesine
  • HY-134189A
    EST73502 monohydrochloride
    		Antagonist 99.58%
    EST73502 monohydrochloride is a selective, orally active and blood-brain barrier (BBB) penetrant dual μ-opioid receptor (MOR) agonist and σ1 receptor (σ1R) antagonist, with Kis of 64 nM and 118 nM for MOR and σ1R, respectively. EST73502 monohydrochloride has antinociceptive activity.
    EST73502 monohydrochloride
  • HY-149804
    S1R agonist 2
    		Agonist ≥98.0%
    S1R agonist 2 (Compound 8b) is a selective S1R agonist with Kis of 1.1 nM and 88 nM for S1R and S2R, respectively. S1R agonist 2 exhibits neuroprotection against ROS and NMDA-induced neurotoxicity.
    S1R agonist 2
  • HY-118901
    Opipramol
    		Antagonist 99.91%
    Opipramol (Ensidon) is an atypical tricyclic antidepressant (TCA). Opipramol acts primarily as a sigma (σ) receptor agonist and can potently interact with sigma recognition sites with a Ki value of 50 nM. Opipramol can be used for the research of generalized anxiety disorder (GAD).
    Opipramol
  • HY-19120
    KB-5492 anhydrous
    		Inhibitor 99.50%
    KB-5492 anhydrous is a potent and selective inhibitor of sigma receptor, inhibits specific [3H]1,3-di(2-tolyl)guanidine (DTG) binding to the sigma receptor with an IC50 of 3.15 μM. KB-5492 anhydrous is an anti-ulcer agent.
    KB-5492 anhydrous