1237-70-3 2-((alpha-Ethylbenzyl)oxy)-2-methylpropionic acid 2-(diethylamino)ethyl ester hydrochloride Propionic acid, 2-((alpha-ethylbenzyl)oxy)-2-methyl-, 2-(diethylamino)ethyl ester, monohydrochloride Sch 1205