background introduction of 2-ethyl-4-methylimidazole 2-ethyl-4-methylimidazole (2-ethyl-4-methylimidazole, referred to as eemi) is an organic compound and belongs to the imidazole compound. imidazole is a class of heterocyclic compounds with unique chemical structure and widespread use. its basic structure consists of a five-membered ring containing two nitrogen atoms. eemi imparts its unique physical and chemical properties by...