1-Piperazineethanol, alpha-(1,3-dimethyl-7-xanthinylmethyl)-4-phenethyl-, benzoate (ester) 20153-86-0 5-26-14-00060 (Beilstein Handbook Reference) BRN 0601184 Theophylline, 7-(2-benzoyloxy-3-(4-phenethyl-1-piperazinyl)propyl)-