Indazole-4-boronic acid pinacol ester4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-indazole1H-Indazole-4-boronic acid pinacol ester4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole1H-吲唑-4-硼酸频哪酯4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-INDAZOLE