| Synonyms: | Doxofylline Impurity 11;7,7'-methylenebis(1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione);1H-Purine-2,6-dione, 7,7'-methylenebis[3,7-dihydro-1,3-dimethyl-;Theophylline impurities819;Theophylline impurities818;7,7'-methylenebis(1,3-dimethyl-1H-purine-2,6(3H,7H)-dione);7,7'-methylenebis(1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione);7,7'-methylenebis(1,3-dimethyl-1H-purine-2,6(3H,7H)-dione) |