Coptisine (chloride)
Coptisine chloride is an alkaloid from Chinese goldthread, and acts as an efficient uncompetitive IDO inhibitor with a Ki value of 5.8 μM and an IC50 value of 6.3 μM. Coptisine chloride is a potent H1N1 neuraminidase (NA-1) inhibitor with an IC50 of 104.6 μg/mL and can be used for influenza A (H1N1) infection.