CAS 83947-56-2 appears in our catalog under these names: trans-2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)styrene, 97%, trans-2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)styrene, 95%, TRANS-2-PHENYLVINYLBORONIC ACID PINACOL, trans-2-Phenylvinylboronic acid pinacol ester, Trans-2-Phenylvinylboronic acid pinacol ester 96%. Offered by: Thermo Scientific (Acros), Fluorochem, Sigma-Aldrich, Biosynth, Ambeed. Available pack sizes: 1g, 5g, 250mg, 10g, 25g, 100g, 100mg.