Widely used as a highly efficient catalyst in olefin metathesis reactions, enabling the formation of carbon-carbon bonds in organic synthesis. Particularly effective in ring-closing metathesis (RCM), cross-metathesis (CM), and ring-opening metathesis polymerization (ROMP). Its robust structure allows for high functional group tolerance and stability under various reaction conditions, making it valuable in pharmaceutical synthesis, polymer chemistry, and fine chemical manufacturing. Commonly employed in the production of complex molecules such as natural products and drug intermediates due to its high activity and selectivity.