Used primarily as a reagent in organic synthesis, especially in cross-coupling reactions such as Stille coupling. It serves as an organostannane reagent to transfer the 2-chloropyrimidin-5-yl group to aryl or vinyl halides, enabling the formation of carbon-carbon bonds in pharmaceutical and agrochemical intermediates. Its reactivity with palladium catalysts allows for the selective construction of complex heteroaromatic systems, commonly found in bioactive molecules. Due to the toxicity associated with organotin compounds, its use is typically restricted to controlled laboratory settings for the development of specialty chemicals and active pharmaceutical ingredients.