Radiosynthesis of the diastereomerically pure ( E E )‐[ 11 11 C]ABP688

摘要

We report an efficient protocol for the radiosynthesis of diastereomerically pure ( E )‐[ 11 C]ABP688, a positron emission tomography (PET) tracer for metabotropic glutamate type 5 (mGlu5) receptor imaging. The protocol reliably provides sterile and pyrogen‐free formulation of (E)‐ [ 11 C]ABP688 suitable for preclinical and clinical PET imaging with 99% diastereomeric excess (d.e.), 99% overall radiochemical purity (RCP), 14.9 ± 4.3% decay‐corrected radiochemical yield (RCY), and 148.86 ± 79.8 GBq/μmol molar activity in 40 minutes from the end of bombardment.