Used in Suzuki-Miyaura cross-coupling reactions as a stable and selective boron reagent for constructing carbon-carbon bonds in complex molecule synthesis. Its MIDA ester group enhances stability and solubility, allowing for iterative coupling strategies in automated synthesis. Particularly valuable in pharmaceutical and agrochemical research for assembling heteroaromatic systems with high functional group tolerance. The p-toluenesulfonyl protection improves handling and shelf life compared to unprotected boronic acids.