3-Methyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene3-Methylthiophene-2-boronic acid, pinacol ester3-甲基噻吩-2-硼酸频哪醇酯4,4,5,5-四甲基-2-(3-甲基-2-噻吩基)-1,3,2-二氧杂硼烷3-Methylthiophene-2-boronic acid pinacol ester4,4,5,5-Tetramethyl-2-(3-methyl-2-thienyl)-1,3,2-dioxaborolane