This compound is a phosphonium ylide serving as a Wittig reagent in organic synthesis. It is primarily used to convert aldehydes and ketones into alkenes through the Wittig reaction, enabling the formation of carbon-carbon double bonds essential for constructing complex molecular architectures. As a key reagent in the preparation of pharmaceutical compounds, it facilitates the synthesis of biologically active molecules with precise stereochemistry. It is also employed in agrochemical production to create active ingredients for crop protection. Additionally, its reactivity supports the development of advanced materials, such as functionalized polymers and coatings.