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SM-21 maleate is a potent and selective σ2 antagonist with central effects following systemic administration. Causes increased release of acetylcholine at central muscarinic synapses. Potent analgesic (efficacy comparable to morphine) and nootropic agent.
|Storage||Store at RT|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
|Solvent||Max Conc. mg/mL||Max Conc. mM|
The following data is based on the product molecular weight 453.92. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|0.25 mM||8.81 mL||44.06 mL||88.12 mL|
|1.25 mM||1.76 mL||8.81 mL||17.62 mL|
|2.5 mM||0.88 mL||4.41 mL||8.81 mL|
|12.5 mM||0.18 mL||0.88 mL||1.76 mL|
References are publications that support the biological activity of the product.
Ghelardini et al (1997) Antinociceptive profile of 3-α-tropanyl-(2-Cl)-acid phenoxybutyrate (SM-21): a novel analgesic with a presynaptic cholinergic mechanism of action. J.Pharmacol.Exp.Ther. 282 430 PMID: 9223584
Ghelardini et al (2000) Pharmacological identification of SM-21, the novel σ2 antagonist. Pharmacol.Biochem.Behav. 67 659 PMID: 11164098
Matsumoto and Mack (2001) (±)-SM 21 attenuates the convulsive and locomotor stimulatory effects of cocaine in mice. Eur.J.Pharmacol. 417 R1 PMID: 11301071
If you know of a relevant reference for SM-21 maleate, please let us know.
Keywords: SM-21 maleate, SM-21 maleate supplier, Selective, σ2, sigma2, receptors, antagonists, Presynaptic, cholinergic, modulators, Muscarinic, Acetylcholine, release, Nicotinic, nAChR, Other, Sigma2, Receptors, Non-selective, Muscarinics, 0751, Tocris Bioscience
Citations are publications that use Tocris products. Selected citations for SM-21 maleate include:
Dolma et al (2016) Inhibition of Dopamine Receptor D4 Impedes Autophagic Flux, Proliferation, and Survival of Glioblastoma Stem Cells. Cancer Cell 29 859 PMID: 27300435
Matsumoto et al (2007) Effects of UMB24 and (+/-)-SM 21, putative σ2-preferring antagonists, on behavioral toxic and stimulant effects of cocaine in mice. PLoS One 86 86 PMID: 17241657
Ishima and Hashimoto (2012) Potentiation of nerve growth factor-induced neurite outgrowth in PC12 cells by ifenprodil: the role of σ-1 and IP3 receptors. J Diabetes Res 7 e37989 PMID: 22655093
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Peripheral sensitization is the reduction in the threshold of excitability of sensory neurons that results in an augmented response to a given external stimulus. This poster outlines the excitatory and inhibitory signaling pathways involved in modulation of peripheral sensitization. The role of ion channels, GPCRs, neurotrophins, and cytokines in sensory neurons are also described.