1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-7-(3-hydroxybutyl)- 21622-64-0 3,7-Dihydro-1,3-dimethyl-7-(3-hydroxybutyl)-1H-purine-2,6-dione 5-26-14-00067 (Beilstein Handbook Reference) BRN 0269896 Theophylline, 7-(3-hydroxybutyl)-