5-OxoETEmethylester is an esterified form of the polyunsaturated keto acid 5-oxoETE . 5-OxoETEmethylester is an agonist of oxoeicosanoid receptor 1 (OXER1; EC50 = 1.54 μM for β-arrestin recruitment) that has a higher maximal response than 5-oxoETE in a β-arrestin assay.