Radiosynthesis of [11C]SNAP-7941-the first PET-tracer for the melanin concentrating hormone receptor 1 (MCHR1)

► Synthesis of the first PET-tracer for the MCHR1 [11C]SNAP-7941. ► High radiochemical incorporation yields 2.9±1.6 GBq; 11.5±6.4% EOB. ► Preparation and characterization of a suitable labeling precursor; SNAP-acid.