Imiquimod hydrochloride (R 837 hydrochloride), an immune response modifier, is a selective toll like receptor 7 (TLR7) agonist. Imiquimod hydrochloride exhibits antiviral and antitumor effects in vivo. Imiquimod hydrochloride can be used for the research of external genital, perianal warts, cancer and COVID-19. In Vivo In animal models, Imiquimod hydrochloride stimulates the innate immune response by increasing NK cell activity, activating macrophages to secrete\ncytokines and nitric oxide, and inducing proliferation and differentiation of B lymphocytes. Imiquimod hydrochloride stimulates the innate immune response through induction, synthesis, and release of cytokines, including interferon-a (IFN-α), interleukin (IL)-6, and tumour necrosis factor (TNF)-α . MCE has not independently confirmed the accuracy of these methods. They are for reference only. Form:Solid