a stable isotope dilution gas chromatography-negative ion chemical ionization-mass spectrometry assay for simultaneous quantitative measurement of 5-hydroxyeicosatetraenoic acid ( hete ) , 12-hete , 15-hete , and 12-hydroxyheptadecatrienoic acid in one single gc/ms run was established .
C0044800
12-hete
C0020349
hete