1-(3,5-Dimethoxy-4-hydroxybenzoyl)-4-piperonylpiperazine hydrochloride 2,6-Dimethoxy-4-(4-piperonylpiperazin-1-ylcarbonyl)phenol hydrochloride 6761-68-8 Phenol, 2,6-dimethoxy-4-(4-piperonylpiperazin-1-ylcarbonyl)-, hydrochloride