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Flupirtine maleate

Catalog No.GC11470

NMDA receptor antagonist

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Flupirtine maleate Chemical Structure

Cas No.: 75507-68-5

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10mM (in 1mL DMSO)
$36.00
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100mg
$63.00
In stock
1g
$288.00
In stock

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Sample solution is provided at 25 µL, 10mM.

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Background

Flupirtine Maleate(D 9998) is a selective neuronal potassium channel opener that also has NMDA receptor antagonist properties.IC50 Value: Target: Potassium channel; NMDA receptorin vitro: High concentrations of flupirtine antagonized inward currents to NMDA(200 microM) at -70 mV with an lC50 against steady-state responses of 182.1+/-12.1 microM. The effects of flupirtine were voltage-independent and not associated with receptor desensitization making actions within the NMDA receptor channel or at the glycine modulatory site unlikely. NMDA receptor antagonism probably has little relevance for the clinical efficacy of flupirtine as the concentrations needed were far higher than those achieved in clinical practice. However, the activation of a G-protein-regulated inwardly rectifying K+ channel was identified as an interesting molecular target site of flupirtine. In the next stage, the central nervous spectrum of action of experimental K+ channel openers (PCO) was considered. As far as they have been studied, experimental K+ channel openers display a spectrum of action comparable to that of flupirtine [1]. Therapeutic flupirtine concentrations (≤10 μM) did not affect voltage-gated Na(+) or Ca(2+) channels, inward rectifier K(+) channels, nicotinic acetylcholine receptors, glycine or ionotropic glutamate receptors. Flupirtine shifted the gating of K(V)7 K(+) channels to more negative potentials and the gating of GABA(A) receptors to lower GABA concentrations [2]. Cell exposure to flupirtine decreased the amplitude of delayed rectifier K(+) current (I(K(DR))) with a concomitant raise in current inactivation in NSC-34 neuronal cells [4].in vivo: Rats were trained to discriminate the novel analgesic flupirtine (10.0 mg/kg i.p., 10 min) from no drug under a two-choice fixed-ratio 5 shock-termination schedule. Flupirtine yielded a dose-response curve with an ED50 of 3.87 mg/kg. The opioid analgesics pentazocine, codeine and tramadol failed to produce flupirtine appropriate responding. The opioid antagonist naltrexone did not antagonize the discriminative effects of flupirtine [3]. Both morphine (ED50=0.74 mg/kg) and flupirtine (ED50=3.32 mg/kg) caused dose-related anti-hyperalgesia at doses that did not cause sedation [5]. Toxicity: Based on study-end data, hepatotoxicity was detected in 31% of patients receiving flupirtine for ≥ 6 weeks [6].

References:
[1]. Yeung et al (2007) Molecular expression and pharmacological identification of a role for Kv7 channels in murine vascular reactivity. Br.J.Pharmacol. 151 758.
[2]. Gordon R, Sofia RD, Diamantis W.Effect of flupirtine maleate on the nociceptive pathway, EEG, evoked potentials and polysynaptic reflexes in laboratory animals.Postgrad Med J. 1987;63 Suppl 3:49-55.
[3]. Hedges A, Warrington SJ, Turner P, Niebch G.Flupirtine maleate and antipyrine half-life.Eur J Clin Pharmacol. 1987;33(4):437.
[4]. Powell-Jackson P, Williams R.Use of flupirtine maleate as an analgesic in patients with liver disease.Br J Clin Pract. 1985 Feb;39(2):63-6.
[5]. Diamantis W, Gordon R, Sofia RD.Analgesic activity following combined oral administration of flupirtine maleate and peripherally acting analgesics in mice and rats.Postgrad Med J. 1987;63 Suppl 3:29-34.

Chemical Properties

Cas No. 75507-68-5 SDF
Chemical Name (Z)-but-2-enedioic acid;ethyl N-[2-amino-6-[(4-fluorophenyl)methylamino]pyridin-3-yl]carbamate
Canonical SMILES CCOC(=O)NC1=C(N=C(C=C1)NCC2=CC=C(C=C2)F)N.C(=CC(=O)O)C(=O)O
Formula C19H21FN4O6 M.Wt 420.39
Solubility ≥ 17.55mg/mL in DMSO Storage Store at -20°C
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table

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1 mg 5 mg 10 mg
1 mM 2.3787 mL 11.8937 mL 23.7874 mL
5 mM 0.4757 mL 2.3787 mL 4.7575 mL
10 mM 0.2379 mL 1.1894 mL 2.3787 mL
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Average Rating: 5 ★★★★★ (Based on Reviews and 12 reference(s) in Google Scholar.)

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