1-(5-Ethoxycarbonylpentyl)-4-(o-methoxyphenyl)piperazine dihydrochloride 1-Piperazinehexanoic acid, 4-(2-methoxyphenyl)-, ethyl ester, dihydrochloride 81185-87-7 Ethyl 4-(2-methoxyphenyl)-1-piperazinehexanoate dihydrochloride