Used as a phase-transfer catalyst in organic synthesis, particularly in reactions involving amino acid derivatives and sulfonate functionalities. Its zwitterionic structure enhances solubility in both aqueous and organic phases, facilitating reactions under mild conditions. Commonly applied in peptide coupling, protection-deprotection sequences, and synthesis of sulfonate-containing bioactive molecules. Stable under Boc-protecting group manipulation conditions, making it suitable for multi-step syntheses in pharmaceutical development.