Tributyl(selenophen-2-yl)stannane is primarily used in organic synthesis, particularly in the formation of carbon-carbon bonds through cross-coupling reactions. It serves as a valuable reagent in Stille coupling, where it facilitates the introduction of selenophene groups into complex organic molecules. This is especially useful in the development of conjugated polymers and organic semiconductors, which are critical components in electronic devices such as organic light-emitting diodes (OLEDs) and solar cells. Additionally, its application extends to the synthesis of pharmaceuticals and agrochemicals, where the selenophene moiety can enhance biological activity or modify the physical properties of the target compounds. Its role in these processes highlights its importance in advancing materials science and medicinal chemistry.