Imiquimod Impurity 6

4-Desamino-1,5-dihydro-4-oxo Imiquimod is a related compound of Imiquimod , which has been shown to induce alpha interferon (IFN-??α) synthesis. 4-Desamino-1,5-dihydro-4-oxo Imiquimod can be used in the determination and quantification of imiquimod and its related impurities. It can also be used in the preparation of imidazo[4,5-c]quinoline derivatives and study of their interferon-inducing structure-activity relationship.