Synonym(s): 3-Carboxyphenylboronic acid pinacol ester, 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid Formula: C13H17BO4 Formula weight: 248.09 Purity: 97% CAS Number: 269409-73-6 Harmonized Tariff Code:  2934.99