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Pyridaben-d13 is the deuterium labeled Pyridaben[1]. Pyridaben is a mitochondrial electron transport inhibitor (METI) acaricide that promotes the formation of damaging oxygen and nitrogen radicals. Pyridaben selectively inhibits complex I (NADH dehydrogenase) with an IC50 value of 2.4 nM (assay sites: rat liver and bovine heart mitochondria). Pyridaben also significantly inhibits rat mitochondrial mtNOS function[2][3].

[1] Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216. DOI:10.1177/1060028018797110
[2] Gomez C,et al. Pesticides and impairment of mitochondrial function in relation with the parkinsonian syndrome. Front Biosci. 2007 Jan 1;12:1079-93. DOI:10.2741/2128
[3] Namin HH, et al. Resistance to pyridaben in Canadian greenhouse populations of two-spotted spider mites, Tetranychus urticae (Koch). Pestic Biochem Physiol. 2020 Nov170:104677. DOI:10.1016/j.pestbp.2020.104677