130820-11-0 4-(4-Cyclopropylphenyl)-1-methyl-4-piperidinyl propionate hydrochloride 4-Piperidinecarboxylic acid, 4-(4-cyclopropylphenyl)-1-methyl-, ethyl ester, hydrochloride Ethyl 4-(4-cyclopropylphenyl)-1-methyl-4-piperidinecarboxylate hydrochloride