Used as a reagent in organic synthesis, particularly in the preparation of pyridinium derivatives and heterocyclic compounds. It serves as a hydrazine equivalent in cyclization reactions, enabling the construction of nitrogen-containing rings. Commonly applied in pharmaceutical intermediates synthesis where controlled introduction of nitrogen functionalities is required. Its tosylate salt form enhances stability and solubility in polar solvents, making it suitable for use in aqueous or mixed solvent systems. Also utilized in the development of dyes and functional materials due to its ability to participate in condensation and coupling reactions.