Formulation: A solution in ethanol (1 µg/ml each compound)
Shelf life (days): 1825
Notes: EPA oxylipin MaxSpec® LC-MS mixture contains oxylipin metabolites derived from eicosapentaenoic acid (EPA; Item Nos. 90110 / 21908). 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 E3 (Item No. 14990), Prostaglandin F3α (Item No. 16990), 5(S)-HEPE (Item No. 32210), (±)8-HEPE (Item No. 32340), (±)9-HEPE (Item No. 32400), (±)11-HEPE (Item No. 32500), 12(S)-HEPE (Item No. 32550), 15(S)-HEPE (Item No. 32710), and (±)18-HEPE (Item No. 32840).
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