1-(4-Chlorophenyl)-N,N-dimethyl-alpha-(2-methylpropyl)cyclobutanemethanamine hydrochloride 106650-56-0 84485-00-7 BTS 54524 Cyclobutanemethanamine, 1-(4-chlorophenyl)-N,N-dimethyl-alpha-(2-methylpropyl)-, hydrochloride Meridia Sibutramine hydrochloride Sibutramine hydrochloride anhydrous