New discoveries in chemical research and development in 2021. Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage. In a patent，Which mentioned a new discovery about name: 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, name: 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine
Radiochemical labeling of MDL 105725 using the secondary labeling precursor 2-[18F]fluoroethyltosylate ([18F]FETos) was carried out in yields of ?90% synthesizing [18F]MHMZ in a specific activity of ?50 MBq/nmol with a starting activity of ?3 GBq. Overall radiochemical yield including [18F]FETos synthon synthesis, [18F]fluoroalkylation and preparing the injectable [18F]MHMZ solution was 42% within a synthesis time of ?100 min. The novel compound showed excellent specific binding to the 5-HT2A receptor (Ki = 9.0 nM) in vitro and promising in vivo characteristics.
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