1,3-Dimethyl-7-(2-hydroxyethyl)xanthine nitrate 2,6(1,3)-Purinedione, 1,3-dimethyl-7-(2-hydroxyethyl)-, nitrate 63919-12-0 Theophylline, 7-(2-hydroxyethyl)-, nitrate, (ester) Xanthine, 1,3-dimethyl-7-(2-hydroxyethyl)-, nitrate (ester)