(-)-Corynoxidine is an acetylcholinesterase inhibitor with an IC50 value of 89.0 μM, isolated from the aerial parts of Corydalis speciosa.(-)-Corynoxidine exhibits antibacterial activities against Staphylococcus aureus and methicillin-resistant S. aureus strains in different degrees[2].IC50 & Target: IC50: 89.0 μM (acetylcholinesterase)