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Cletoquine-d4 is deuterium labeled Cletoquine. Cletoquine (Desethylhydroxychloroquine) is a major active metabolite of Hydroxychloroquine. Cletoquine is produced in the liver by CYP2D6, CYP3A4, CYP3A5, and CYP2C8 isoenzymes. Cletoquine is also a Chloroquine derivative and has the ability to against the chikungunya virus (CHIKV). Cletoquine has antimalarial effects and has the potential for autoimmune diseases treatment[1][2].

Desethyl hydroxychloroquine-d4 is intended for use as an internal standard for the quantification of desethyl hydroxychloroquine by GC- or LC-MS. Desethyl hydroxychloroquine is an active metabolite of hydroxychloroquine .1 It is formed via the desethylation of hydroxychloroquine in the liver, a process mediated by the cytochrome P450 (CYP) isoforms CYP2D6, CYP3A4, CYP3A5, and CYP2C8.

Plasmodium

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1.Charlier, B., Pingeon, M., Dal Piaz, F., et al.Development of a novel ion-pairing HPLC-FL method for the separation and quantification of hydroxychloroquine and its metabolites in whole bloodBiomed. Chromatogr.32(8)e4258(2018)