Used as a deuterated building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions where isotopic labeling is required. Its deuterated methyl groups enhance metabolic stability in pharmaceutical research, making it valuable for tracing reaction pathways and studying drug metabolism. Commonly employed in the development of labeled active pharmaceutical ingredients (APIs) for mass spectrometry and NMR analysis. The boronate ester group enables efficient carbon-carbon bond formation, allowing incorporation into complex molecules with high isotopic purity.