4-Biphenylboronic acid is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, which are essential for creating carbon-carbon bonds in the production of pharmaceuticals, agrochemicals, and advanced materials. It serves as a key intermediate in the synthesis of complex organic molecules, such as biaryl compounds, which are important in drug development and materials science. Additionally, it is utilized in the preparation of sensors and molecular recognition systems due to its ability to interact with diols and other functional groups, making it valuable in analytical chemistry and biochemistry. Its role in the development of liquid crystals and organic electronic materials further highlights its versatility in industrial applications.