Description General description 4-Bromo-2,3,5,6-tetrafluoropyridine is also referred as 4-bromotetrafluoropyridine. Regioselective nucleophilic substitution and palladium catalyzed Suzuki-Miyaura reactions of 4-bromo-2,3,5,6-tetrafluoropyridine has been reported. Quantum mechanical calculations of energies, geometries and vibrational wave numbers of 4-bromo-2,3,5,6-tetrafluoropyridine have been evaluated by density functional theory. Application 4-Bromo-2,3,5,6-tetrafluoropyridine was used in the preparation of 2,3,5,6-tetrafluoro-pyridylcadmium or 2,3,5,6-tetrafluoropyridylzinc reagent. Packaging 1 g in ampule