Used as a coupling reagent in peptide synthesis, facilitating the formation of amide bonds between amino acids under mild conditions. It is particularly effective in solid-phase peptide synthesis due to its stability and high reactivity. Also employed in the preparation of active esters and in the synthesis of pharmaceuticals and fine chemicals where efficient and selective amide bond formation is required. Its triazine core allows for controlled stepwise reactions, making it valuable in multi-step organic syntheses.