the prostaglandins with eluted with acetone-water and the methoxime-pentafluorobenzyl-trimethylsilyl ( mo-pfb-tms ) derivatives ( pge2 and 6-oxo-pgf1 alpha ) and the pfb-tms derivative ( pgf2 alpha ) were quantified by gc-ms-ms .
C0033554
prostaglandins
C0012472
pge2