Fig. 2
From: State of the art procedures towards reactive [18F]fluoride in PET tracer synthesis
 A protected [18F]FDG with a mixed-mode quaternary ammonium salt resin (MAX, Oasis). B Radiosynthesis of 4-[18F]FPhe from with a tertiary ammonium based anion-exchange resin (Oasis WAX). C Radiosynthesis of [18F]Setoperone with a phosphonium borane [(Ph2MeP)C6H4(BMes2)]+ anion-exchange resin. D Radiosynthesis of [18F]FDG with a phosphazene base (P2tBu) supported anion-exchange resin; n.m.: not mentioned