U.S. Kemelbekov, Zh.I. Rustembekov, A. Gabdulkhakov, A. Guskov, K.D. Praliev, W.Saenger, K.M. Beketov
The hydrochloric salts of Kazcaine (1-(2-ethoxyethyl)-4-ethynyl-4-benzoyloxypiperidine)and Prosidol (1-(2-ethoxyethyl)-4-phenyl-4-propionyloxypiperidine are effective anaestethetic and analgesic preparations.