FIGURE 1. Analytic radio-HPLC of mixture of ¹⁸F-FDG, ¹⁸F-FDG-6-P, ¹⁸F-FD-PG1, and ¹⁸F-FDG-1,6-P₂. Compounds were prepared individually by in vitro enzymatic reactions and mixed afterward (SphereClone [Phenomenex, Torrance, CA] 5-µm SAX 250 x 4.6 mm column; 20 mmol/L potassium phosphate buffer; pH 7.2; flow rate, 0.8 mL/min).

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