SM-324405 is a TLR7 agonistic antedrug (EC₅₀ = 50 nM), with pEC₅₀ values of 7.3 and 6.6 for human TLR7 and Rat TLR7, respectively. SM-324405 is used for immunoresearch of allergic diseases. An antedrug is defined as a locally active compound that is designed to be rapidly metabolized to an inactive form upon entry into the circulation and prevents systemic toxicity by losing its agonistic activity in a plasmatic environment^[1][2][3].

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[3]. Sang Nam Lee, et al. Chemical Strategies to Enhance the Therapeutic Efficacy of Toll-like Receptor Agonist Based Cancer Immunotherapy. Acc Chem Res. 2020 Oct 20;53(10):2081-2093.  [Content Brief]