(1R,2S,3R,5S)-Methyl 8-methyl-3-(p-tolyl)-8-azabicyclo[3.2.1]octane-2-carboxylate is a byproduct in the synthesis of Fluoroethyl-PE2I (F591758), which is a useful intermediate that is often used in the synthesis of PET ligands that are used for dopamine transporter imaging.