TY - JOUR T1 - Indirect ^18F-Labeling of Estradiol via Automated Click Chemistry: Radiochemical Development and In Vitro Evaluation A1 - Ayesha Khan A1 - Neha Patel A1 - Rahul Verma JF - Pharmaceutical Sciences and Drug Design JO - Pharm Sci Drug Des SN - 3062-4428 Y1 - 2024 VL - 4 IS - 1 DO - 10.51847/MiQjUEL35m SP - 197 EP - 211 N2 - Click chemistry provides a powerful method for selectively linking diverse molecular building blocks to create sophisticated molecules efficiently. Here, we report the use of copper(I)-catalyzed biorthogonal cycloaddition between alkynes and azides for the indirect incorporation of fluorine-18 into an estradiol-based compound, aimed at imaging estrogen receptors. The synthesis protocol was entirely established and refined using an automated module, with parameters adjusted to deliver the target molecule in satisfactory yield and avoid any solid formation. While the in vitro and in vivo data did not support advancement as a clinical radiotracer, the results are nonetheless important because automated systems are indispensable for producing PET tracers reliably and repeatedly under Good Manufacturing Practice standards, all while reducing radiation exposure to staff.  UR - https://galaxypub.co/article/indirect-18f-labeling-of-estradiol-via-automated-click-chemistry-radiochemical-development-and-in-sksxfr8phhjpfky ER -