Fluoroacetonitrile is primarily used as an intermediate in organic synthesis, especially in the pharmaceutical and agrochemical industries. Its reactivity allows for the introduction of fluorinated groups into target molecules, which can enhance metabolic stability and bioavailability in drug design. It is also employed in the development of fluorinated building blocks for specialty chemicals. Due to the presence of both fluorine and nitrile functional groups, it serves as a valuable reagent in fluorination reactions and the construction of heterocyclic compounds. Its application is limited in large-scale industrial processes due to toxicity concerns, but it remains important in laboratory-scale synthesis of fluorinated active ingredients.