Used as a fluorinating agent in organic synthesis, particularly for the selective introduction of fluorine into complex molecules. It is effective in electrophilic fluorination reactions, offering good stability and reactivity under mild conditions. Commonly applied in pharmaceutical and agrochemical research where fluorinated compounds enhance metabolic stability, bioavailability, and binding affinity. Its pyridinium structure facilitates easy handling and controlled release of fluorine, making it suitable for late-stage fluorination in multi-step syntheses.