2-Bromo-4-fluoropropiophenone CAS 345-94-8 Active Halogenated Aromatic Intermediate for Fine Chemical Synthesis Product Overview 2-Bromo-4-fluoropropiophenone (CAS 345-94-8) is a high-activity halogenated aromatic ketone compound. Its unique bromine and fluorine substituted structure delivers excellent chemical reactivity and molecular modifiability. This fine chemical intermediate supports efficient structural derivation, serving core preparation processes in aromatic