CL097 CL097 is a highly water-soluble derivative of the imidazoquinoline compound R848 (≥ 20 mg/ml). Similarly to R848, CL097 is a TLR7 and TLR8 ligand [1,2]. It induces the activation of NF-κB at 0.4 µM (0.1 µg/ml) in TLR7-transfected HEK293 cells and at 4 µM (1 µg/ml) in TLR8-transfected HEK293 cells. Specificity: human TLR7/8 and mouse TLR7 agonist Working Concentration: 0.5 - 5 μg/ml CL075 (for human TLR8 and mouse TLR7) 50 ng - 5 μg/ml CL075 (for human TLR7 Endotoxin level: EndoFit™ (<0.001 EU/µg) Formula: C13H14N40 Molecular weight: 242.28