4-甲氧基吡啶-3-硼酸频哪醇酯4-Methoxy-3-pyridineboronic acid pinacol ester4-Methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine4-METHOXY-3-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-PYRIDINE4-Methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine4-Methoxypyridine-3-boronic acid, pinacol ester