(S)-BTBBPh-SaBOX is primarily utilized in asymmetric catalysis, particularly in enantioselective synthesis, where it serves as a chiral ligand. Its application is significant in the pharmaceutical industry for the production of enantiomerically pure compounds, which are crucial for drug development. The compound is also employed in organic synthesis to facilitate reactions such as asymmetric hydrogenation, carbon-carbon bond formation, and other transformations that require high stereochemical control. Additionally, it finds use in academic research for studying mechanistic pathways and developing new catalytic processes.