[18F]SynVesT-1 (also known as [18F]SDM-8 or [18F]MNI-1126) is a potent and selective synaptic vesicle glycoprotein 2 (SV2A) positron emission tomography (PET) imaging agent. In order to fulfill the increasing clinical demand of an 18F-labeled SV2A PET ligand, we have developed a fully automated procedure to provide a sterile and pyrogen-free good manufacturing procedure (GMP)-compliant product of [18F]SynVesT-1 suitable for clinical studies in humans. [18F]SynVesT-1 is synthesized via a rapid copper-mediated radiofluorination protocol. The procedure was developed and established on a commercially available module, TracerMaker (ScanSys Laboratorieteknik ApS, Copenhagen, Denmark), a synthesis platform originally developed to conduct carbon-11 radiochemistry. From ~130 GBq (end-of-bombardment), our newly developed procedure enabled us to prepare [18F]SynVesT-1 in an isolated radioactivity yield of 14,220 ± 800 MBq (n = 3), which corresponds to a radiochemical yield (RCY) of 19.5 ± 0.5%. The radiochemical purity (RCP) and enantiomeric purity of each of the final formulated batches exceeded 98%. The overall synthesis time was 90 min and the molar activity was 330 ± 60 GBq/μmol (8.9 ± 1.6 Ci/μmol). The produced [18F]SynVesT-1 was stable over 8 h at room temperature and is suitable for in vivo PET imaging studies in human subjects.
[18F]SynVesT-1(也称为[18F]
SDM-8或[18F]MNI-1126)是一种强效且具有选择性的突触囊泡糖蛋白2(SV2A)正电子发射断层扫描(PET)显像剂。为了满足临床对18F标记的SV2A PET
配体的日益增长的需求,我们开发了一种全自动程序,以提供符合无菌、无热原良好生产规范(GMP)的[18F]SynVesT-1产品,适用于人体临床研究。[18F]SynVesT-1通过快速
铜介导的放射性
氟化方案合成。该程序是在市售模块TracerMaker(ScanSys Laboratorieteknik ApS,丹麦哥本哈根)上开发和建立的,该合成平台最初是为进行碳-11放射
化学而开发的。从约130 GBq(轰击结束)开始,我们新开发的程序使我们能够制备出[18F]SynVesT-1,其分离放射性产率为14,220 ± 800 MBq(n = 3),相当于放射
化学产率(RCY)为19.5 ± 0.5%。每个最终配制批次的放射
化学纯度(RCP)和对映体纯度均超过98%。总合成时间为