The identification of putative oxylipins from the 15-HETE oxidation and PGH rearrangement experiments was performed by extracting the EICs of specific parent masses on MZmine3 (version 3.7.0) with 3 ppm tolerance and extracting the MS/MS spectra of the integrated features at peak apex. Subsequently, the identification is based on the study of MS/MS data based on known oxylipin fragmentation mechanisms.