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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Nucl Med Biol. 2013 Oct 9;41(1):58–67. doi: 10.1016/j.nucmedbio.2013.09.011

Fig. 3.

Fig. 3

First-order kinetic plots were obtained in vitro for hydrolysis of FET prodrugs in rat (A) and human (B) blood at 37 °C. It was clearly demonstrated that FET-Gly ([18F]2) and FET-Ala ([18F]3) showed excellent in vitro hydrolysis – releasing FET ([18F]1) rapidly. However, the Nacetyl derivative of FET, AcFET ([18F]4), exhibited a very slow rate.