Used as a building block in organic synthesis, particularly in the development of pharmaceuticals and biologically active compounds. Its amine and sulfone functional groups make it suitable for use in cross-coupling reactions and as a linker in drug design. Commonly employed in the synthesis of kinase inhibitors and other therapeutic agents where a polar, flexible spacer is required. Also utilized in the preparation of ligands for receptor binding studies due to its ability to mimic certain peptide motifs.