Synonyms: Xanthine, 1,3-dimethyl-7-(2-hydroxyethyl)-, nitrate (ester);1,3-Dimethyl-7-(2-hydroxyethyl)xanthine nitrate;Theophylline, 7-(2-hydroxyethyl)-, nitrate, (ester);2,6(1,3)-Purinedione, 1,3-dimethyl-7-(2-hydroxyethyl)-, nitrate;7-(2-hydroxyethyl)-1,3-dimethyl-3,7-dihydro-1h-purine-2,6-dione nitrate(1:1);AC1L3HUS;AC1Q21WD;AR-1H2690;LS-149585;7-(2-hydroxyethyl)-1,3-dimethylpurine-2,6-dione; nitric acid