2-Ethoxyphenylacetic Acid is a versatile reactant used in various chemical syntheses that yield enzyme inhibitors. 2-Ethoxyphenylacetic Acid is used as a reactant in engineered myoglobins in which hemin iron is replaced by various abiological noble metals produce novel metalloenzymes that catalyze carbene insertion into C-H bonds as well as carbene addition to vinylarenes and aliph. α-olefins.