Used primarily in organic synthesis as a guanylation reagent, enabling the conversion of primary amines into guanidines. This transformation is valuable in the preparation of biologically active compounds, including pharmaceutical intermediates and agrochemicals. The compound facilitates efficient and selective guanidine bond formation under mild conditions, making it suitable for use in peptide chemistry and the development of nitrogen-rich functional molecules. Its hydrochloride salt form enhances stability and solubility in polar solvents, supporting its use in aqueous or mixed solvent systems.