1H-Indazole-5-boronic acid, pinacol ester5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazoleINDAZOLE-5-BORONIC ACID PINACOL ESTER5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole1H-吲唑-5-硼酸频哪醇酯5-(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)-1H-吲唑1H-Indazole-5-boronic acid pinacol ester