In vitro stability was carried out by adding 10 µL of [89Zr]Zr-Df-Bz-F19 (50 μCi, 1.85 MBq) to 500 µL human serum. The solutions (n = 3) were incubated at 37 °C for 7 days and analyzed daily by radio-TLC using a mobile phase consisting of 50 mM EDTA (pH 5) on Varian ITLC-SG strips [45 (link),47 (link)].
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