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SARS-CoV-2-IN-16 (Compound 12) is a potent SARS-CoV-2 nucleocapsid protein (NPro) inhibitor. SARS-CoV-2-IN-16 exhibits potent anti-viral activity with the EC50 of 3.69 μM. SARS-CoV-2-IN-16 binds to NPro with the low KD value of 7.82 μM, suggesting that SARS-CoV-2-IN-16 is a potent NPro ligand[1].

[1] Yi-Ting Wang, et al. Novel nucleocapsid protein-targeting phenanthridine inhibitors of SARS-CoV-2. Eur J Med Chem. 2022 Jan 5;227:113966. DOI:10.1016/j.ejmech.2021.113966