Leukotriene B4 Pathway MaxSpec(R) LC-MS Mixture

The Leukotriene B4 Pathway MaxSpec(R) LC-MS Mixture contains 5-lipoxygenase pathway metabolites derived from arachidonic acid (Cay-90010). 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 18-carboxy dinor leukotriene B4 (Cay-20170), 20-carboxy leukotriene B4 (Cay-20180), 20-hydroxy leukotriene B4 (Cay-20190), leukotriene B4 (Cay-20110), and 5(S)-HETE (Cay-34230).Formulation: (Request formulation change), A solution in ethanol (1 µg/ml of each compound).