Flupirtine-d4 (hydrochloride)

Flupirtine-d4 (D 9998-d4) hydrochloride is the deuterium labeled Flupirtine. Flupirtine(D 9998) hydrochloride is a selective neuronal potassium channel opener that also has NMDA receptor antagonist properties[1][2].

[1]Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216. |[2]Kornhuber J, et al. Flupirtine shows functional NMDA receptor antagonism by enhancing Mg2+ block via activation of voltageindependent potassium channels. Rapid communication. J Neural Transm. 1999;106(9-10):857-67.;Klinger F, et al. Concomitant facilitation of GABAA receptors and KV7 channels by the non-opioid analgesic flupirtine. Br J Pharmacol. 2012 Jul;166(5):1631-42.;Swedberg MD, et al. Pharmacological mechanisms of action of flupirtine: a novel, centrally acting, nonopioid analgesic evaluated by its discriminative effects in the rat. J Pharmacol Exp Ther. 1988 Sep;246(3):1067-74.;Wu SN, et al. Evidence for inhibitory effects of flupirtine, a centrally acting analgesic, on delayed rectifier k(+) currents in motor neuron-like cells. Evid Based Complement Alternat Med. 2012;2012:148403.;Kolosov A, et al. Flupirtine enhances the anti-hyperalgesic effects of morphine in a rat model of prostate bone metastasis. Pain Med. 2012 Nov;13(11):1444-56.;Michel MC, et al. Unexpected frequent hepatotoxicity of a prescription drug, flupirtine, marketed for about 30 years. Br J Clin Pharmacol. 2012 May;73(5):821-5.