Diethyl (ethoxymethylene)malonate87-13-831 % similar 2-Ethoxycarbonylphenylboronic acid pinacol ester269409-99-630 % similar Ethyl (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate859169-20-330 % similar Ethyl vinyl ether109-92-230 % similar Ethyl formate109-94-430 % similar Poly(ethyl vinyl ether)25104-37-430 % similar