Synonym(s): 4,4,5,5-Tetramethyl-2-(2-methyl-1-propenyl)-1,3,2-dioxaborolane; 2,2-Dimethylethenylboronic acid pinacol ester Formula: C10H19BO2 Formula Weight: 182.07 CAS No.: 126689-00-7 Purity: 97% Density: 0.8879g/mLat 25°C Packaging: 1, 5 g in glass bottle