Синонимы: Theophylline Imp. C (EP),Caffeine Imp. B (EP), Theophylline-Ethylenediamine Anhydrous Imp. C (EP), Theophylline USP Related Compound C, Theophylline USP RC C, N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)formamide, Theophylline-Ethylenediamine Imp. C (EP), Theophylline Related Compound C, Caffeine Impurity B, Theophylline Impurity C, Theophylline-Ethylenediamine Impurity Cg