Quinoxalin-6-ylboronic acid hydrochloride is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is essential for forming carbon-carbon bonds, enabling the construction of complex organic molecules, including pharmaceuticals and agrochemicals. Its boronic acid group acts as a key intermediate, facilitating the coupling with aryl or vinyl halides in the presence of a palladium catalyst. Additionally, it serves as a building block in medicinal chemistry for developing compounds with potential biological activities, such as anticancer, antiviral, or antibacterial agents. Its stability and reactivity make it a valuable tool in drug discovery and material science research.