Ibuprofen diethylaminoethyl ester is an acidic antiinflammatory drug with anesthetic effect[1].
References
[1] M Gidoh, et al. Studies on the derivatives showing local anesthetic actions of several acidic antiinflammatory drugs, aiming at the possibility of treatment for leprous neuritis. Nihon Rai Gakkai Zasshi. 1983 Jul-Sep;52(3):156-64.
