Isopropoxy 4,4,5,5-tetramethyl-1,3,2-dioxaborolane61676-62-8100 % similar Triisopropyl borate5419-55-655 % similar 2-Methoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane1195-66-046 % similar Bis(pinacolato)diboron73183-34-341 % similar 2-Cyclopropyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane126689-01-837 % similar Isopropenylboronic acid pinacol ester126726-62-330 % similar