4-Pyrazoleboronic acid pinacol ester4,4,5,5-Tetramethyl-2-(1H-pyrazol-2-yl)-1,3,2-dioxaborolane4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolePyrazol-4-ylboronic acid pinacol ester4,4,5,5-Tetramethyl-2-(1H-pyrazol-4-yl)-1,3,2-dioxaborolane1H-Pyrazole-4-boronic Acid Pinacol Ester2-(1H-Pyrazol-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(1H-Pyrazol-4-yl)boronic acid pinacol ester