Olmesartan Medoxomil Impurity 3

Chemical Name: 4-(1-Methoxy-1-methylethyl)-2-propyl-1H-imidazole-5-carboxylic Acid Ethyl Ester; Ethyl 4-(1-Methoxy-1-methylethyl)-2-propyl-1H-imidazole-5-carboxylate;