Pinacol-d12 is an intermediate in the synthesis of Isotope labelled Tebuconazole (T013002), which is an ergosterol biosynthesis inhibitor present in most pesticide formulations (1,2). Various uptake is observed in plants (3). Drinking water Contaminant Candidate List 3 - CCL 3 as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants.