1-Piperazineethanol, 4-benzyl-alpha-(1,3-dimethyl-7-xanthinylmethyl)-, acetate (ester) 19977-15-2 5-26-14-00059 (Beilstein Handbook Reference) BRN 0597336 Theophylline, 7-(2-acetoxy-3-(4-benzyl-1-piperazinyl)propyl)-