4-methylimidazole (4-MI) is an important organic intermediate.It is mainly used in the synthesis of cimetidine, which is a large quantity of stomach medicine, and can also be used as epoxy resin curing agent and metal surface protection agent.The 4-methylimidazole in Cola is produced in the production of caramel pigment from ammonium sulfite.The caramel coloring can make cola drinks brown.White to almost white crystalline powder for 4-methylimidazole, soluble in water and ethanol, corrosive.

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