1-(4-Hydroxybenzoyl)-4-piperonylpiperazine 4-(4-Piperonylpiperazin-1-ylcarbonyl)phenol 5-23-02-00528 (Beilstein Handbook Reference) 6854-34-8 BRN 0900341 Phenol, 4-(4-piperonylpiperazin-1-ylcarbonyl)-