This compound is widely used as a reagent in organic synthesis, particularly in the preparation of Wittig reagents. It is employed to convert aldehydes and ketones into alkenes through the Wittig reaction, a key method for forming carbon-carbon double bonds. Additionally, it serves as a precursor for generating phosphonium ylides, which are essential intermediates in various organic transformations. Its application extends to the synthesis of complex organic molecules, including pharmaceuticals and natural products, where precise control over double bond formation is crucial. The compound is also utilized in the modification of polymers and materials, enabling the introduction of functional groups for specific properties. Its role in facilitating efficient and selective reactions makes it a valuable tool in both academic research and industrial processes.