1-Piperidineethanol, alpha-(((2-methyl-3-thienyl)oxy)methyl)-2,2,6,6-tetramethyl-, hydrochloride 109193-58-0 alpha-(((2-Methyl-3-thienyl)oxy)methyl)-2,2,6,6-tetramethyl-1-piperidineethanol HCl