Flupirtine maleate

Catalog No.S1334

Flupirtine maleate is the salt form of Flupirtine, which is a centrally acting non-opioid analgesia, is a selective neuronal potassium channel opener that also has NMDA receptor antagonist properties.

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Flupirtine maleate Chemical Structure

Flupirtine maleate Chemical Structure
Molecular Weight: 420.39

Validation & Quality Control

Quality Control & MSDS

Related Compound Libraries

Flupirtine maleate is available in the following compound libraries:

Product Information

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  • Research Area
  • Inhibition Profile

Product Description

Biological Activity

Description Flupirtine maleate is the salt form of Flupirtine, which is a centrally acting non-opioid analgesia, is a selective neuronal potassium channel opener that also has NMDA receptor antagonist properties.
Targets NMDA receptor [1] Potassium channel [6]
In vitro Flupirtine pre-incubated for 2 hours prevents cell death in rat cortical neurons induced by NMDA and gp120 of HIV-1. [1] Flupirtine is capable of protecting primary neurons against glutamate-induced cytotoxicity by reducing calcium ion concentrations at 1-10 mM. [2] Flupirtine pretreated for 2 hours preventsβ-amyloid-induced apoptosis in primary neuronal cells at concentrations of 1 or 5μg/mL. [3] Flupirtine at concentration of 10 μM markedly decreases nonreceptor-mediated necrotic cell death in PC 12 cultures treated with 10 mM L-glutamate, meanwhile, Flupirtine exerts anti-oxidative effects in PC 12 cultures. [4] Flupirtine-maleate at concentrations of 1 μM and 10 μM decreases TRAIL-mediated death of human living brain tissue culture. [5] Flupirtine activates inwardly rectifying potassium ion channels and thus stabilizes the resting membrane potential at a therapeutically relevant concentration. [6]
In vivo Pre-treatment with Flupirtine exerts a protective effect on hippocampal and striatal neuronal damage and on deficits in spatial learning in rats with cerebral ischemia. [7] Flupirtine administered centrally inhibits the nociceptive responses induced by chemical, thermal, mechanical and electrical stimuli in animal studies. [8] Flupirtine exerts muscle relaxant effects in rat. [9]

Protocol(Only for Reference)

Cell Assay:


Cell lines PC12 cell
Concentrations 1 or 5 μg/mL
Incubation Time 72 hours

For measurement of viability and generation of reactive oxygen intermediates, PC12 cells are seeded in 24- or 96-well plates coated with poly-L-lysine at 105 cells/mL. Drugs are dissolved in PBS (pH 7.4), or ethanol and filtered sterile. At the end of each experiment cells are trypsinized and pelleted together with cells of the culture supernatant. After staining for 10 min with 0.2% Trypan blue solution live (unstained) and dead (Trypan blue positive) cells are counted in a hemocytometer chamber. In addition, cellular viability is evaluated by the reduction of MTT to formazan. After 2 hours incubation with MTT (0.5 mg/ml) at 37 °C, cells are lysed in DMSO. Extinction at 570 nm is determined on a plate photometer. For staining of surviving adherent cells, plates are incubated for 10 min with 0.5% crystalviolet dissolved in 20% methanol. Plates are rinsed with water and stained cells are lysed in 50% ethanol, 0.1 M sodiumcitrate before determining extinction at 550 nm.

Animal Study:


Animal Models male Wistar rats with cerebral ischemia induced by four-vessel-occlusion
Formulation sterile 0.9% sodium chloride solution
Dosages 5 mg/kg
Administration Intraperitoneal injection either 20 min before and 50 min after occlusion or directly and 70 min after occlusion

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Perovic S, et al. Eur J Pharmacol, 1994, 288(1), 27-33.

[2] Rupalla K, et al. Eur J Pharmacol, 1995, 294(2-3), 469-473

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Chemical Information

Download Flupirtine maleate SDF
Molecular Weight (MW) 420.39


CAS No. 75507-68-5
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 84 mg/mL (199.81 mM)
Ethanol 2 mg/mL warming (4.75 mM)
Water <1 mg/mL
In vivo 30% propylene glycol, 5% Tween 80, 65% D5W 30 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name Carbamic acid, N-[2-amino-6-[[(4-fluorophenyl)methyl]amino]-3-pyridinyl]-, ethyl ester, (2Z)-2-butenedioate

Tech Support

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