Fig. 5From: An HPLC and UHPLC-HRMS approach to study PSMA-11 instability in aqueous solutionChromatograms of a PSMA-11 reference solution b (3 μg/mL) 8 days old, injected at 0.5 (a), 2 (b), and 5 (c) hours from adding EDTA and heated at 50 °CBack to article page