Used as a deuterated building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions for the preparation of isotopically labeled conjugated polymers and organic semiconductors. Its deuterated methyl groups enhance stability and allow for detailed mechanistic studies using techniques like NMR and mass spectrometry. Commonly employed in the development of materials for OLEDs, OFETs, and other optoelectronic devices where isotopic labeling aids in tracking material behavior and degradation pathways.