其它别名N-Methyl-5-(Methylamino)-1H-Imidazole-4-Carboxamide Hydrochloride; N-Methyl-5(Or 4)-Methylamino-; N-Methyl-4-(Methylamino)-1H-Imidazole-5-Carboxamide:Hydrochloride; Theophylline Ep Impurity D Hcl; Theophyllidine Hydrochloride; Theophylline-Ethylenediamine Ep Impurity D; Theophylline-Ethylenediamine Impurity 4(theophylline-Ethylenediamine Ep Impurity D); Theophylline Ep Impurity D