(±)9(10)-DiHOME-d4 is intended for use as an internal standard for the quantification of 9(10)-DiHOME by GC- or LC-MS. (±)9(10)-DiHOME is the diol form of (±)9(10)-EpOME (Item No. 52400), a cytochrome P450-derived epoxide of linoleic acid (Item Nos. 90150 | 90150.1 | 21909) also known as leukotoxin.1 It is formed from 9(10)-EpOME by soluble epoxide hydrolase (sEH) in neutrophils.2WARNING This product is not for human or veterinary use.