Phenylboronic acid is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, where it serves as a key reagent for forming carbon-carbon bonds. This makes it valuable in the production of pharmaceuticals, agrochemicals, and advanced materials. It is also employed in the development of sensors and detection systems, especially for glucose monitoring, due to its ability to bind diols selectively. Additionally, it plays a role in the preparation of boron-containing compounds and as a building block in medicinal chemistry for drug discovery. Its applications extend to polymer chemistry, where it is used to create functional materials with specific properties.