4-Cyano-2-fluorobenzeneboronic acid, pinacol ester3-Fluoro-4-(4,4,5,5-tetramethyl-1,3-dioxaborolan-2-yl)benzonitrile4-Cyano-2-fluorobenzeneboronic acid pinacol ester3-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile4-Cyano-2-fluorophenylboronic acid pinacol ester