sigma receptor

Sigma-1 receptor antagonist 2 is a potent and selective antagonist of sigma 1 receptor (σ1 R) (σ1 and σ2 receptor with Kis of 3.88 and 1288 nM , respectively).

Sigma-1 receptor antagonist 3 is a potent and selective antagonist of Sigma-1 (σ1) receptor(Ki : 1.14 nM), has the potential for the neuropathic pain.

Sigma-1 receptor antagonist 1 is an effective and selective antagonist of sigma-1 receptor. Sigma-1 receptor antagonist 1 exhibits antineuropathic pain activity and can be used in the treatment of neuropathic pain studies.

Sigma-1 receptor antagonist 5 (compound 12), a 4-pyridylpiperidine derivative, exhibits analgesic properties through its antagonistic action on sigma receptors (Ki=4.5 nM (σ1R), 10 nM (σ2R)) and the histamine H3 receptor (hH3R, Ki=7.7 nM, IC50=215 nM). It effectively attenuates Capsaicin-induced nociception and demonstrates significant antinociceptive effects in both nociceptive and neuropathic pain models [1].

Sigma-2 receptor antagonist 1 is an antagonist of the sigma-2 (σ-2) receptor.

Sigma-1 receptor antagonist 4 (Compound 32) is a potent σ1R antagonist that significantly enhances morphine's analgesic effects and reverses morphine-induced analgesic tolerance, potentially preventing morphine tolerance [1].

Pridopidine (FR310826), a dopamine (DA) stabilizer, acts as a low affinity dopamine D2 receptor (D2R) antagonist, improves motor performance and shows neuroprotective effects in Huntington disease R6 2 mouse model.

Blarcamesine (AVex-73) is a muscarinic M1 agonist potentially for the treatment of Alzheimer's disease.

L-745870 trihydrochloride is a highly potent and selective D4 dopamine receptor antagonist.

Ifenprodil (RC61-91) is an inhibitor of the NMDA receptor, specifically of GluN1 (glycine-binding NMDA receptor subunit 1) and GluN2B (glutamate-binding NMDA receptor subunit 2) subunits. Additionally, Ifenprodil inhibits GIRK channels and interacts with alpha1 adrenergic, serotonin, and sigma receptors.

KSK94 FA is a potent histamine H3 receptor antagonist that inhibits H3 receptors and is used in the study of neuropathic pain and obesity.

KSK68 is a potent dual sigma-1 and histamine H3 receptor antagonist with potential analgesic activity and high affinity for H3 receptors, sigma-1, sigma-2 receptors.KSK68 can be used in the study of pain related diseases.

KSK94 is a specific H3 receptor antagonist that inhibits H3, sigma-1, and sigma-2 receptors , with Ki values of 7.9, 2958, and 75.2 nM, respectively, and can be used to study injurious pain and neuropathic pain.

PD 144418 oxalate is a highly potent and selective sigma 1 (σ1) receptor ligand, displaying a Ki value of 0.08 nM for σ1 and 1377 nM for σ2. It exhibits negligible affinity for other receptors, ion channels, and enzymes. Additionally, PD 144418 oxalate demonstrates potential antipsychotic activity.

Tiospirone (BMY 13859-1 free base) is a 5-HT2 receptor antagonist and dopamine blocker that inhibits D2, 5-HT1a, 5-HT7, and sigma receptors.Tiospirone is used in the study of neurological disorders such as schizophrenia.

KB-5492 FA is a selective sigma receptor inhibitor with antiulcerogenic effects.CAS 번호128-52-56-8

E1R is a positive sigma-1 receptor (Sig1R PAM) allosteric modulator. It has a cognition-enhancing activity.

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.

OPC-14523 hydrochloride (VPI 013 hydrochloride) is an orally active and potent sigma and 5-HT1A receptor agonist with antidepressant activity for the study of neurological disorders.

(2R,3S)-E1R (Compound 2c) is an enantiomer of E1R. (2R,3R)-E1R is a sigma-1 receptor positive allosteric modulator for the treatment of cognition/memory disorders.

(2S,3S)-E1R (Compound 2d) is an enantiomer of E1R. (2R,3R)-E1R is a sigma-1 receptor positive allosteric modulator for the treatment of cognition/memory disorders.

AF-710B is a specific variant of M1 muscarinic and Sigma-1 receptor agonist used in the study of neurological disorders such as Alzheimer's disease dementia and schizophrenia.

SKF83959, a benzazepine analog, is a selective and potent partial agonist of the dopamine D1 receptor with Ki values of 1.18, 7.56, 920, and 399 nM for rat D1, D5, D2, and D3 receptors, respectively.SKF83959 is a potent variant modulator of the sigma (σ)-1 receptor, which ameliorates cognitive dysfunction for the study depression and Alzheimer's disease.

BD-1047 dihydrobromide (BD1047.2HBr) , a selective functional antagonist of sigma receptors, has antipsychotic activity in animal models predictive of efficacy in schizophrenia.

S1RA (E-52862)(E-52862) is a potent, selective antagonist of the sigma-1 receptor (σ1R, Ki=17 nM), demonstrating significant selectivity over the sigma-2 receptor (σ2R, Ki > 1000 nM).

S1RA hydrochloride (E-52862 hydrochloride) is an effective and specific sigma-1 receptor(σ1R, Ki: 17 nM) antagonist, and has good selectivity against σ2R (Ki > 1000 nM).

BD1063 dhydrochloride is a potent and selective sigma 1(σ1) receptor antagonist(Ki = 9 nM).

Siramesine (Lu 28-179)(Lu 28-179) is a selective sigma-2 receptor agonist, which has been shown to trigger cell death of cancer cells and to exhibit a potent anticancer activity in vivo.lysosome-destabilizing agent siramesine can induce rapid cell death in a number of cell lines at concentrations above 20 μM. In HaCaT cells, cell death was accompanied by caspase activation, rapid loss of mitochondrial membrane potential (MMP), cytochrome c release, cardiolipin peroxidation and typical apoptotic morphology, whereas in U-87MG cells most apoptotic hallmarks were not notable, although MMP was rapidly lost

Volinanserin (MDL100907) (MDL 100907) is a potent and selective antagonist of the serotonin receptor 5-HT2 (Ki: 0.36 nM) and shows 300-fold selectivity for 5-HT2 receptor over 5-HT1c, alpha-1 adrenergic and sigma receptors.

BD 1008 dihydrobromide is a selective antagonist of the sigma 1 (σ1) receptor (Ki = 2 nM). BD 1008 dihydrobromide have high affinity for sigma1 receptors, moderate affinity for sigma2 receptors.

PB28 is a cyclohexylpiperazine derivative that functions as a potent and highly selective agonist of the sigma 2 (σ2) receptor, exhibiting a Ki (binding affinity) of 0.68 nM. At the same time, PB28 acts as an antagonist of the sigma 1 (σ1) receptor, with a Ki of 0.38 nM. PB28 demonstrates a lower affinity for other receptors. It effectively inhibits electrically evoked twitch in both the guinea pig bladder (EC50 value of 2.62 μM) and ileum (EC50 value of 3.96 μM). Moreover, PB28 exhibits the ability to modulate protein-protein interaction between SARS-CoV-2 and human cells. Additionally, PB28 triggers caspase-independent apoptosis and possesses significant antitumor activity.

EST64454 hydrochloride (EST64454) is a highly soluble σ1 receptor antagonist (Ki : 22 nM),has the potential for Pain Management.

σ1 Receptor antagonist-1 is a selective sigma 1 receptor antagonist.

SARS-CoV-2-IN-57 (compound (+)-R-26) is a potent inhibitor of SARS-CoV-2 with an IC50 of 80 nM and demonstrates high affinity for the Sigma Receptor, exhibiting Kis of 13.6 nM (S1R) and 14.4 nM (S2R) [1].

CM398 is an orally active chemical compound that acts as a highly selective ligand for the sigma-2 receptor (K i =0.43 nM), demonstrating a significant ratio of selectivity between sigma-1 and sigma-2 receptors (1000-fold). Moreover, CM398 exhibits notable affinity towards dopamine (K i =32.90 nM) and serotonin transporters (K i =244.2 nM). In addition, CM398 has shown promising efficacy as an anti-inflammatory analgesic in a mouse model of inflammatory pain induced by formalin [1].

Roluperidone (CYR-101) is a novel cyclic amide derivative. It has high equipotent affinities for 5-HT2A and σ2 receptors (Ki of 7.53 nM and 8.19 nM for 5-HT2A and σ2).

L-745870 hydrochloride has excellent brain penetration. L-745870 hydrochloride is a high-affinity, selective and orally active human dopamine D4 receptor antagonist with a Ki of 0.43 nM, and considerably weaker D2 receptor affinity with a Ki of 960 nM and D3 receptor affinity with a Ki of 2300 nM. 

Fabomotizole hydrochloride (CM346 hydrochloride), an anxiolytic drug, produces anxiolytic and neuroprotective effects. The mechanism of Afobazole remains poorly defined, however, with GABAergic, NGF, and BDNF release promoting, MT1 receptor antagonism, MT3 receptor antagonism, and sigma agonism suggested as potential mechanisms. Afobazole inhibits MAO-A reversibly and there might be also some involvement with serotonin receptors.

Cutamesine dihydrochloride (SA4503 dihydrochloride) is a selective σ1 receptor agonist (IC50: 17.4 nM). It shows selectivity for σ1 over σ2 receptors, and inhibits angiotensin II-induced cardiomyocyte hypertrophy in vitro and attenuates myocardial hypertrophy in vivo. In a rat model of experimental stroke, it enhances brain plasticity and sensorimotor function.

PRE-084 hydrochloride is a selective agonist of σ1(IC50:44 nM, in the sigma receptor assay).

Blonanserin (AD-5423) is an atypical antipsychotic approved in Japan in January, 2008. Relative to many other antipsychotics, blonanserin has an improved tolerability profile, lacking side effects such as extrapyramidal symptoms, excessive sedation, or hypotension.

Phenyltoloxamine (Bistrimin) is an antihistamine agent with sedative and analgesic effects. Phenyltoloxamine also has potent Sigma-1 receptor binding affinity with Ki of 160 nM [1] [2] [3].

CM304 is a highly selective sigma-1 receptor antagonist.

Sigma-LIGAND-1 hydrochloride is a selective sigma receptor ligand that acts at the DTG (IC50: 16 nM) and PPP (IC50: 19 nM) sites. Sigma-LIGAND-1 hydrochloride is able to act on the dopamine D2 receptor (Ki: 4000 nM).

Rimcazole is a sigma receptor antagonist. It also binds to the dopamine transporter and inhibiting dopamine uptake.

Fabomotizole, also known as Afobazole, Obenoxazine and CM346, is an anxiolytic drug launched in Russia in the early 2000s. It produces anxiolytic and neuroprotective effects without any sedative or muscle relaxant actions. Its mechanism of action remains poorly defined however, with GABAergic, NGF- and BDNF-release-promoting, MT1 receptor agonism, MT3 receptor antagonism, and sigma agonism suggested as potential mechanisms. Fabomotizole was shown to inhibit MAO-A reversibly and there might be also some involvement with serotonin receptors.

Glycerol phenylbutyrate-D5 is a deuterium-labeled Glycerol phenylbutyrate. Glycerol phenylbutyrate is a sigma-2 (σ2) receptor ligand (pKi: 8.02).

L 687384 is a high-affinity ligand of sigma receptor.

Glycerol phenylbutyrate-D15 is a deuterium-labeled Glycerol phenylbutyrate. Glycerol phenylbutyrate is a sigma-2 (σ2) receptor ligand (pKi: 8.02).

Selective sigma (σ) receptor ligand. Displays high affinity for σ1; also binds at σ2 sites (Ki = 1.5 nM and 50.8 nM respectively). Selective over a range of receptor types including dopaminergic and muscarinic receptors, DAT and SERT. Prezzavento et al (2007) Novel sigma receptor ligands: synthesis and biological profile. J.Med.Chem. 50 951 PMID:17328523 |Prezzavento et al (2008) A new sigma ligand, (±)-PPCC, antagonizes kappa opioid receptor-mediated antinociceptive effect. Life Sci. 82 549 PMID:18261749 |Antonini et al (2009) Anti-amnesic properties of (±)-PPCC, a novel sigma receptor ligand, on cognitive dysfunction induced by selective cholinergic lesion in rats. J.Neurochem. 109 744 PMID:19245662