1-(2-Phenethyl)-4-(3,4,5-trimethoxybenzoylethyl)piperazine dihydrochloride 17821-66-8 3-(4-Phenethylpiperazinyl)-3',4',5'-trimethoxypropiophenone dihydrochloride Piperazine, 1-(2-phenethyl)-4-(3,4,5-trimethoxybenzoylethyl)-, dihydrochloride Propiophenone, 3-(4-phenethylpiperazinyl)-3',4',5'-trimethoxy-, dihydrochloride