Potassium trifluoro(naphthalen-2-ylmethyl)borate is a stable organotrifluoroborate salt used as a nucleophilic coupling partner in palladium-catalyzed cross-coupling reactions, such as Suzuki-Miyaura couplings. It facilitates the formation of carbon-carbon bonds, enabling the introduction of the naphthalen-2-ylmethyl moiety into complex molecules. Valued for its air and moisture stability, high purity, and compatibility with aqueous media, it is particularly suitable for pharmaceutical and agrochemical synthesis, as well as advanced materials development. This reagent supports efficient, selective reactions under mild conditions, often in continuous flow setups.