(3-Formyl-4-methylphenyl)boronic acid is primarily used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is widely employed to form carbon-carbon bonds, making it valuable in the production of pharmaceuticals, agrochemicals, and organic materials. The compound serves as a key intermediate in the synthesis of complex molecules due to its boronic acid group, which facilitates coupling with aryl or vinyl halides. Additionally, it is utilized in the development of sensors and probes for detecting biologically relevant molecules, leveraging its ability to interact with diols and other functional groups. Its formyl group further allows for derivatization, enabling the creation of diverse chemical structures for research and industrial applications.