(Z)-3-(Tributylstannyl)acrylic acid ethyl ester is an organotin compound featuring a tributyltin group attached to a (Z)-configured acrylic acid ethyl ester moiety. It serves as a versatile vinylstannane reagent in organic synthesis. This compound is primarily employed in Stille cross-coupling reactions, a powerful palladium-catalyzed method for forming carbon-carbon bonds. The (Z)-vinylstannane moiety acts as an efficient coupling partner with various organic electrophiles (e.g., aryl or vinyl halides, triflates), enabling the stereoselective synthesis of (Z)-configured alkenes, which are valuable structural motifs in pharmaceuticals, agrochemicals, and advanced materials. Its reactivity is characteristic of organotin reagents used in transition-metal catalysis. As an organotin compound, it requires careful handling due to potential toxicity. It is typically stored under inert atmosphere and used in controlled environments for research and development in synthetic chemistry laboratories.