Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions for the synthesis of conjugated polymers and organic semiconductors. Its boronate ester groups enable efficient carbon-carbon bond formation, making it valuable in the development of organic electronic materials such as organic field-effect transistors (OFETs), organic photovoltaics (OPVs), and light-emitting diodes (OLEDs). The presence of the 3-methylthiophene core enhances electronic properties and stability in the resulting polymers, supporting applications in flexible electronics and printable devices.