Used primarily as an intermediate in organic synthesis, particularly in the preparation of heterocyclic compounds and pharmaceuticals. It serves as an efficient reagent for introducing formamidine functional groups, which are valuable in the development of agrochemicals, dyes, and bioactive molecules. Its reactivity makes it suitable for condensation reactions with carbonyl compounds and amines, enabling the construction of nitrogen-containing rings such as imidazoles and pyrimidines. Commonly employed in research settings for peptide modification and nucleoside analog synthesis.