In-vitro metabolism of isotetrandrine, a bisbenzylisoquinoline alkaloid, in rat hepatic S9 fraction by high-performance liquid chromatography-atmospheric pressure ionization mass spectrometry.

In-vitro metabolism of isotetrandrine, a bisbenzylisoquinoline alkaloid, in rat hepatic S9 fraction by high-performance liquid chromatography-atmospheric pressure ionization mass spectrometry.