Used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, to introduce ethynyl groups into aromatic or vinyl halides, enabling the efficient creation of complex molecules. It serves as a stable, protected intermediate for alkyne-containing compounds. Commonly applied in the development of pharmaceuticals, agrochemicals, and materials science. The MIDA (N-methyliminodiacetic acid) ester group enhances hydrolytic stability, facilitating safer handling, storage, and selective deprotection in multi-step synthetic processes.