... phenyl)-3-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-urea can be used as ... of it,we are sure our price is lowest and our quality is best. We have advanced technique,so ... ureido)phenylboronic acid is about 0.3% ,Any impurities not more than0.2%,1-(5-Fluoro-2-methyl-phenyl)-3-[4-( ... 4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-urea Less than 0 ...