2H-Perfluoroisopropyl 2-fluoroacrylate74359-06-131 % similar Alpha-ketoisocaproic acid816-66-031 % similar 2-Fluoro-3-phenyl-2-propenoic acid350-90-330 % similar 2-Benzylacrylic acid5669-19-230 % similar 2-Benzylacrylic acid62479-28-130 % similar