2-Chloropyridine-4-boronic acid, pinacol ester2-Chloro-4-(4,4,5,5-tetramethyl-[1,3,2]-dioxaborolan-2-yl)-pyridine2-Chloro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyridine2-Chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine2-Chloro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyridine2-Chloropyridine-4-boronic acid pinacol ester2-Chloropyridine-4-boronic acid pinacol ester2-氯-吡啶-4-硼酸频哪醇酯