Used as a key intermediate in the synthesis of conjugated organic semiconductors and molecular wires. Its alkyne-rich structure enables efficient carbon-carbon bond formation in Sonogashira and other cross-coupling reactions, facilitating the construction of extended π-conjugated systems. The chloro and hydroxyl functional groups allow for further derivatization and anchoring to surfaces or polymers, making it valuable in materials science for developing conductive polymers, organic field-effect transistors (OFETs), and photovoltaic devices. Its rigid, linear backbone supports electron delocalization, enhancing electronic properties in thin-film applications.