2-Hydroxypyridine-4-boronic acid is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is essential for forming carbon-carbon bonds, making it valuable in the production of pharmaceuticals, agrochemicals, and advanced materials. Its boronic acid group acts as a key intermediate, enabling the coupling with aryl halides to create complex organic molecules. Additionally, it is utilized in the development of sensors and probes due to its ability to interact with diols and other biological molecules, making it useful in biochemical research and diagnostics. Its stability and reactivity also make it a preferred choice in the synthesis of heterocyclic compounds, which are important in drug discovery and material science.