Phellodendron chinense

Phellodendron chinense is a plant species in the genus "Phellodendron".
The isocoumarin derivative 3-acetyl-3,4-dihydro-5,6-dimethoxy-1"H"-2-benzopyran-1-one can be found in Huáng bǎi ("P. chinense"), one of the fifty fundamental herbs of traditional Chinese medicine.