Used as a specialized boron-based reagent in organic synthesis, particularly in catalytic asymmetric reactions. Its unique fused oxazaborolidine structure makes it effective for enantioselective transformations, such as Diels-Alder cycloadditions and reduction of prochiral ketones. The bromo and hexylthiophene groups enhance substrate coordination and stereocontrol, improving selectivity in complex molecule construction. Commonly applied in pharmaceutical intermediates and fine chemical synthesis where high optical purity is required.