1-Piperidineethanol, alpha-(((4-methyl-3-thienyl)oxy)methyl)-2,2,6,6-tetramethyl-, hydrochloride 109171-70-2 alpha-(((4-Methyl-3-thienyl)oxy)methyl)-2,2,6,6-tetramethyl-1-piperidineethanol HCl