Formulation: A solution in ethanol (1 µg/ml of each compound)
Shelf life (days): 2555
Notes: The dihomo-γ-linolenic acid metabolite LC-MS mixture contains cyclooxygenase and lipoxygenase pathway-derived metabolites of dihomo-γ-linolenic acid (DGLA). The mixture is supplied in an amber ampule in which the headspace has been purged with argon to prevent lipid oxidation. This product has been designed for direct use in LC-MS applications. The solution may be used as a system suitability standard or tuning standard. After opening, we recommend that the mixture be transferred immediately to a 1 ml glass screw cap vial, to prevent solvent evaporation, and stored at -20°C. The mixture should be discarded after multiple freeze/thaw cycles. This mixture contains prostaglandin E1 (Item No. 13010), 15-keto prostaglandin E1 (Item No. 13680), 13,14-dihydro-15-keto prostaglandin E1 (Item No. 13650), 13,14-dihydro-15-keto prostaglandin F1α (Item No. 15670), prostaglandin F1α (Item No. 15010), 8(S)-HETrE (Item No. 36360), 12(S)-HETrE (Item No. 18483), and 15(S)-HETrE (Item No. 36720).
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