1-Piperazineethanol, 4-(o-chlorobenzyl)-alpha-(1,3-dimethyl-7-xanthinylmethyl)- 19971-95-0 5-26-14-00058 (Beilstein Handbook Reference) BRN 0595259 Theophylline, 7-(3-(4-(o-chlorobenzyl)-1-piperazinyl)-2-hydroxypropyl)-