Fig. 4From: Synthesis and preliminary preclinical evaluation of fluorine-18 labelled isatin-4-(4-methoxyphenyl)-3-thiosemicarbazone ([18F]4FIMPTC) as a novel PET tracer of P-glycoprotein expressionA representative HPLC chromatogram (method C) of the non-polar fraction of the brain homogenate at 10 min after injection, showing both [18F]5 (Rt 11 min) and a labelled metabolite (Rt 9 min)Back to article page