Fluphenazine-d8

Fluphenazine-d8 is the deuterium labeled Fluphenazine. Fluphenazine is a potent, orally active phenothiazine-based dopamine receptor antagonist. Fluphenazine blocks neuronal voltage-gated sodium channels. Fluphenazine acts primarily through antagonism of postsynaptic dopamine-2 receptors in mesolimbic, nigrostriatal, and tuberoinfundibular neural pathways. Fluphenazine can antagonize Methylphenidate-induced stereotyped gnawing and inhibit climbing behaviour in mice. Fluphenazine can be used for researching psychosis and painful peripheral neuropathy associated with diabetes and has potential to inhibit SARS-CoV-2.

Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs^[1].

References:
[1]. Zhou X, et al. The neuroleptic drug, fluphenazine, blocks neuronal voltage-gated sodium channels. Brain Res. 2006;1106(1):72-81.
[2]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.
[3]. Nazeam J, et al. Based on Principles and Insights of COVID-19 Epidemiology, Genome Sequencing, and Pathogenesis: Retrospective Analysis of Sinigrin and ProlixinRX (Fluphenazine) Provides Off-Label Drug Candidates. SLAS Discov. 2020 Dec;25(10):1123-1140.
[4]. Siragusa S, Bistas KG, Saadabadi A. Fluphenazine. 2022 May 8. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan.
[5]. Davis JL, et al. Peripheral diabetic neuropathy treated with amitriptyline and fluphenazine. JAMA. 1977 Nov 21;238(21):2291-2.
[6]. Langwiński R, Niedzielski J. Narcotic analgesics and stereotyped behaviour in mice. Naunyn Schmiedebergs Arch Pharmacol. 1980 Jul;312(3):225-7.
[7]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216.