Evaluation of the key ingredient from the main production areas of Phellodendri Amurensis Cortex using ultra‐high‐performance liquid chromatography‐quadrupole time‐of‐flight tandem mass spectrometry and ultra‐high‐performance liquid chromatography coupled to triple‐quadrupole mass spectrometryY. Sun, Xijun Wang, Le Yang et al.|Journal of Separation Science|2024Cited by 11