Chemical preparations for use in scientific research; diagnostic chemicals for scientific use; Positron Emission Tomography (PET) imaging tracing chemicals for scientific and laboratory use; synthetic proteins and amino acids for use in PET imaging for laboratory and research use; reagents for use in PET imaging for laboratory and research use; diagnostic scanning agents for in-vivo use for non-medical research use; diagnostic scanning agents for in-vivo use for scientific or research use; ch...