Imiquimod (hydrochloride) (Standard) is the analytical standard of Imiquimod (hydrochloride). This product is intended for research and analytical applications. 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[1][2].