英文同义词: | Theophylline Impurity 4 (9-(1,3-Dioxolan-2-ylmethyl)-3,9-Dihydro-1,3-Dimethyl-1H-purine-2,6-Dione);Doxofylline Impurity 3;ZIERWCODDLABQQ-UHFFFAOYSA-N;Doxofylline Impurity 3 (Theophylline Impurity 4);Theophylline Impurity 4 (Doxofylline Impurity 3);9-((1,3-dioxolan-2-yl)methyl)-1,3-dimethyl-1H-purine-2,6(3H,9H)-dione;Theophylline Impurity 4;9-((1,3-dioxolan-2-yl)methyl)-1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione |