Fig. 1From: 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 expressionReaction conditions: i: Na2SO4, chloral hydrate, H2O, HCl, hydroxylamine hydrochloride 90 °C 2 h; ii H2SO4 85 °C 15 min; iii ethanol 110 °C 2 hBack to article page