1-Piperazineethanol, 4-benzoyl-alpha-(1,3-dimethyl-7-xanthinylmethyl)- 19972-09-9 5-26-14-00057 (Beilstein Handbook Reference) BRN 0594568 Piperazine, 1-benzoyl-4-(2-hydroxy-3-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxopurin-7-yl)propyl)- Theophylline, 7-(3-(4-benzoyl-1-piperazinyl)-2-hydroxypropyl)-